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Show that every polynomial function is c...

Show that every polynomial function is continuous.

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Let `f(x)=a_0+a_1x+a_1x^2+.....a_nx^n n in Z` be a polynomial function

Since polynomial function is valid for every number we prove continuity of Polynomial Function at any point c

Let c be any real number f(x) is continuous at x=c

if`lim_(xrarrc)f(x)=f(c)`

...
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NCERT-CONTINUITY AND DIFFERENTIABILITY-SOLVED EXAMPLES
  1. Discuss the continuity of the function defined byf(x)={x+2, ifx<0-x+2,...

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  2. Find all the points of discontinuity of the greatest integer function...

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  3. Show that every polynomial function is continuous.

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  4. Discuss the continuity of sine function.

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  5. Prove that every rational function is continuous.

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  6. Show that the function defined by f(x) = sin(x^2)is a continuous func...

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  7. Prove that the function defined by f(x) = t a n xis a continuous func...

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  8. Examine whether the function f given by f(x)=x^2 is continuous at x =...

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  9. Discuss the continuity of the function f given by f(x) = |x| at x = 0.

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  10. Check the continuity of the function f given by f(x) = 2x + 3 at x = ...

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  11. Prove that the identity function on real numbers given by f(x) = x is...

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  12. Is the function defined by f(x) = |x|, a continuous function?

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  13. Show that the function f given by f(x)={x^3+3ifx!=0 ;1ifx=0 is not ...

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  14. Check the points where the constant function f(x) = kis continuous.

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  15. Discuss the continuity of the function/given by f(x)=x^3+x^2-1.

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  16. Discuss the continuity of the function f defined by f(x)=1/x , x!=0.

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  17. If y= A sin x+ B cos x, then prove that (d^2y)/(dx^2)+y=0.

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  18. Find (d^2y)/(dx^2), if y=x^3+tanx.

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  19. Find (dy)/(dx), if x^(2/3)+y^(2/3)=a^(2/3).

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  20. Find (dy)/(dx), if x=a(theta+sintheta), y=a(1-costheta).

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