understanding Multiplicity

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in my books of algebra it talks about polynomial functions and their zeros




Multiplicity and x-Intercepts
If r is a zero of even multiplicity, then the graph touches the x-axis and turns
around at r. If r is a zero of odd multiplicity, then the graph crosses the x-axis
at r. Regardless of whether the multiplicity of a zero is even or odd, graphs tend
to flatten out near zeros with multiplicity greater than one.




what does flatten out means ?







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  • Could you give us a little more context? What book is it, and what is the subject? The "zero" of what?
    – Suzet
    Jul 19 at 3:36






  • 1




    It means they don't grow very fast. Graph $y=x^n$ for some different values of $n$ on Wolfram Alpha, to see what the book means.
    – saulspatz
    Jul 19 at 3:37










  • zero of a polynomial function from book "Blitzer college algebra" Multiplicity and x-Intercepts If r is a zero of even multiplicity, then the graph touches the xaxis and turns around at r. If r is a zero of odd multiplicity, then the graph crosses the xaxis at r. Regardless of whether the multiplicity of a zero is even or odd, graphs tend to flatten out near zeros with multiplicity greater than one.
    – Ahmed M. Elsonbaty
    Jul 19 at 3:38











  • @AhmedM.Elsonbaty Compare for example the "flatness" of $x, x^2, x^3, x^4$ around $,x=0,$.
    – dxiv
    Jul 19 at 4:10














up vote
2
down vote

favorite












in my books of algebra it talks about polynomial functions and their zeros




Multiplicity and x-Intercepts
If r is a zero of even multiplicity, then the graph touches the x-axis and turns
around at r. If r is a zero of odd multiplicity, then the graph crosses the x-axis
at r. Regardless of whether the multiplicity of a zero is even or odd, graphs tend
to flatten out near zeros with multiplicity greater than one.




what does flatten out means ?







share|cite|improve this question





















  • Could you give us a little more context? What book is it, and what is the subject? The "zero" of what?
    – Suzet
    Jul 19 at 3:36






  • 1




    It means they don't grow very fast. Graph $y=x^n$ for some different values of $n$ on Wolfram Alpha, to see what the book means.
    – saulspatz
    Jul 19 at 3:37










  • zero of a polynomial function from book "Blitzer college algebra" Multiplicity and x-Intercepts If r is a zero of even multiplicity, then the graph touches the xaxis and turns around at r. If r is a zero of odd multiplicity, then the graph crosses the xaxis at r. Regardless of whether the multiplicity of a zero is even or odd, graphs tend to flatten out near zeros with multiplicity greater than one.
    – Ahmed M. Elsonbaty
    Jul 19 at 3:38











  • @AhmedM.Elsonbaty Compare for example the "flatness" of $x, x^2, x^3, x^4$ around $,x=0,$.
    – dxiv
    Jul 19 at 4:10












up vote
2
down vote

favorite









up vote
2
down vote

favorite











in my books of algebra it talks about polynomial functions and their zeros




Multiplicity and x-Intercepts
If r is a zero of even multiplicity, then the graph touches the x-axis and turns
around at r. If r is a zero of odd multiplicity, then the graph crosses the x-axis
at r. Regardless of whether the multiplicity of a zero is even or odd, graphs tend
to flatten out near zeros with multiplicity greater than one.




what does flatten out means ?







share|cite|improve this question













in my books of algebra it talks about polynomial functions and their zeros




Multiplicity and x-Intercepts
If r is a zero of even multiplicity, then the graph touches the x-axis and turns
around at r. If r is a zero of odd multiplicity, then the graph crosses the x-axis
at r. Regardless of whether the multiplicity of a zero is even or odd, graphs tend
to flatten out near zeros with multiplicity greater than one.




what does flatten out means ?









share|cite|improve this question












share|cite|improve this question




share|cite|improve this question








edited Jul 19 at 3:42
























asked Jul 19 at 3:31









Ahmed M. Elsonbaty

474




474











  • Could you give us a little more context? What book is it, and what is the subject? The "zero" of what?
    – Suzet
    Jul 19 at 3:36






  • 1




    It means they don't grow very fast. Graph $y=x^n$ for some different values of $n$ on Wolfram Alpha, to see what the book means.
    – saulspatz
    Jul 19 at 3:37










  • zero of a polynomial function from book "Blitzer college algebra" Multiplicity and x-Intercepts If r is a zero of even multiplicity, then the graph touches the xaxis and turns around at r. If r is a zero of odd multiplicity, then the graph crosses the xaxis at r. Regardless of whether the multiplicity of a zero is even or odd, graphs tend to flatten out near zeros with multiplicity greater than one.
    – Ahmed M. Elsonbaty
    Jul 19 at 3:38











  • @AhmedM.Elsonbaty Compare for example the "flatness" of $x, x^2, x^3, x^4$ around $,x=0,$.
    – dxiv
    Jul 19 at 4:10
















  • Could you give us a little more context? What book is it, and what is the subject? The "zero" of what?
    – Suzet
    Jul 19 at 3:36






  • 1




    It means they don't grow very fast. Graph $y=x^n$ for some different values of $n$ on Wolfram Alpha, to see what the book means.
    – saulspatz
    Jul 19 at 3:37










  • zero of a polynomial function from book "Blitzer college algebra" Multiplicity and x-Intercepts If r is a zero of even multiplicity, then the graph touches the xaxis and turns around at r. If r is a zero of odd multiplicity, then the graph crosses the xaxis at r. Regardless of whether the multiplicity of a zero is even or odd, graphs tend to flatten out near zeros with multiplicity greater than one.
    – Ahmed M. Elsonbaty
    Jul 19 at 3:38











  • @AhmedM.Elsonbaty Compare for example the "flatness" of $x, x^2, x^3, x^4$ around $,x=0,$.
    – dxiv
    Jul 19 at 4:10















Could you give us a little more context? What book is it, and what is the subject? The "zero" of what?
– Suzet
Jul 19 at 3:36




Could you give us a little more context? What book is it, and what is the subject? The "zero" of what?
– Suzet
Jul 19 at 3:36




1




1




It means they don't grow very fast. Graph $y=x^n$ for some different values of $n$ on Wolfram Alpha, to see what the book means.
– saulspatz
Jul 19 at 3:37




It means they don't grow very fast. Graph $y=x^n$ for some different values of $n$ on Wolfram Alpha, to see what the book means.
– saulspatz
Jul 19 at 3:37












zero of a polynomial function from book "Blitzer college algebra" Multiplicity and x-Intercepts If r is a zero of even multiplicity, then the graph touches the xaxis and turns around at r. If r is a zero of odd multiplicity, then the graph crosses the xaxis at r. Regardless of whether the multiplicity of a zero is even or odd, graphs tend to flatten out near zeros with multiplicity greater than one.
– Ahmed M. Elsonbaty
Jul 19 at 3:38





zero of a polynomial function from book "Blitzer college algebra" Multiplicity and x-Intercepts If r is a zero of even multiplicity, then the graph touches the xaxis and turns around at r. If r is a zero of odd multiplicity, then the graph crosses the xaxis at r. Regardless of whether the multiplicity of a zero is even or odd, graphs tend to flatten out near zeros with multiplicity greater than one.
– Ahmed M. Elsonbaty
Jul 19 at 3:38













@AhmedM.Elsonbaty Compare for example the "flatness" of $x, x^2, x^3, x^4$ around $,x=0,$.
– dxiv
Jul 19 at 4:10




@AhmedM.Elsonbaty Compare for example the "flatness" of $x, x^2, x^3, x^4$ around $,x=0,$.
– dxiv
Jul 19 at 4:10










1 Answer
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What the book is probably trying to convey is that when a polynomial has a repeated root, the slope of the function tends to approach zero when $y=0$. Take, for example, the graph of $y=left(x+1right)^3left(x+3right)$:



Graph of Function



The graph has a repeated root of $x=-1$ with a multipicity of 3. The slope of the graph approaches zero as $x$ approaches -1.






share|cite|improve this answer





















  • +1 for a crisp answer. In your last sentence you mean "slope of the tangent to the graph" I suppose.
    – P Vanchinathan
    Jul 19 at 3:51










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1 Answer
1






active

oldest

votes








1 Answer
1






active

oldest

votes









active

oldest

votes






active

oldest

votes








up vote
5
down vote



accepted










What the book is probably trying to convey is that when a polynomial has a repeated root, the slope of the function tends to approach zero when $y=0$. Take, for example, the graph of $y=left(x+1right)^3left(x+3right)$:



Graph of Function



The graph has a repeated root of $x=-1$ with a multipicity of 3. The slope of the graph approaches zero as $x$ approaches -1.






share|cite|improve this answer





















  • +1 for a crisp answer. In your last sentence you mean "slope of the tangent to the graph" I suppose.
    – P Vanchinathan
    Jul 19 at 3:51














up vote
5
down vote



accepted










What the book is probably trying to convey is that when a polynomial has a repeated root, the slope of the function tends to approach zero when $y=0$. Take, for example, the graph of $y=left(x+1right)^3left(x+3right)$:



Graph of Function



The graph has a repeated root of $x=-1$ with a multipicity of 3. The slope of the graph approaches zero as $x$ approaches -1.






share|cite|improve this answer





















  • +1 for a crisp answer. In your last sentence you mean "slope of the tangent to the graph" I suppose.
    – P Vanchinathan
    Jul 19 at 3:51












up vote
5
down vote



accepted







up vote
5
down vote



accepted






What the book is probably trying to convey is that when a polynomial has a repeated root, the slope of the function tends to approach zero when $y=0$. Take, for example, the graph of $y=left(x+1right)^3left(x+3right)$:



Graph of Function



The graph has a repeated root of $x=-1$ with a multipicity of 3. The slope of the graph approaches zero as $x$ approaches -1.






share|cite|improve this answer













What the book is probably trying to convey is that when a polynomial has a repeated root, the slope of the function tends to approach zero when $y=0$. Take, for example, the graph of $y=left(x+1right)^3left(x+3right)$:



Graph of Function



The graph has a repeated root of $x=-1$ with a multipicity of 3. The slope of the graph approaches zero as $x$ approaches -1.







share|cite|improve this answer













share|cite|improve this answer



share|cite|improve this answer











answered Jul 19 at 3:42









csch2

220211




220211











  • +1 for a crisp answer. In your last sentence you mean "slope of the tangent to the graph" I suppose.
    – P Vanchinathan
    Jul 19 at 3:51
















  • +1 for a crisp answer. In your last sentence you mean "slope of the tangent to the graph" I suppose.
    – P Vanchinathan
    Jul 19 at 3:51















+1 for a crisp answer. In your last sentence you mean "slope of the tangent to the graph" I suppose.
– P Vanchinathan
Jul 19 at 3:51




+1 for a crisp answer. In your last sentence you mean "slope of the tangent to the graph" I suppose.
– P Vanchinathan
Jul 19 at 3:51












 

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