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If y=|(log)e x| , find (d^2y)/(dx^2) ....

If `y=|(log)_e x|` , find `(d^2y)/(dx^2)` .

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To find the second derivative \(\frac{d^2y}{dx^2}\) for the function \(y = |\log_e x|\), we need to analyze the function in two different intervals based on the properties of the logarithm. ### Step 1: Define the function based on the intervals The function \(y = |\log_e x|\) can be expressed in two cases: 1. For \(0 < x < 1\), \(\log_e x < 0\) so \(y = -\log_e x\). 2. For \(x \geq 1\), \(\log_e x \geq 0\) so \(y = \log_e x\). ### Step 2: Differentiate \(y\) for \(0 < x < 1\) ...
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RD SHARMA-HIGHER ORDER DERIVATIVES-Solved Examples And Exercises
  1. If y=x+e^x , find (d^2x)/(dy^2) .

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  2. If y=|x-x^2| , then find (d^2y)/(dx^2) .

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  3. If y=|(log)e x| , find (d^2y)/(dx^2) .

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  4. If x=acosnt-bsinnt , then (d^2x)/(dt^2) is (a)n^2x (b) -n^2x (c) n x ...

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  5. If x=a t^2,\ \ y=2\ a t , then (d^2y)/(dx^2)= -1/(t^2) (b) 1/(2\ a t^...

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  6. If y=a x^(n+1)+b x^(-n) , then x^2(d^2y)/(dx^2)= (a)n(n-1)y (b) n(n+1...

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  7. (d^(20))/(dx^(20))(2cosxcos3x)= 2^(20)(cos2x-2^(20)cos4x) (b) 2^(20)(...

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  8. If x=t^2,\ \ y=t^3 , then (d^2y)/(dx^2)= (a)3//2 (b) 3//4t (c) 3//2t ...

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  9. If y=a+b x^2,\ a ,\ b arbitrary constants, then (d^2y)/(dx^2)=2\ x y...

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  10. If f(x)=(cosx+isinx)(cos2x+isin2x)(cos3x+isin3x)ddot(cosn x+isinn x) a...

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  11. If y=asinm x+bcosm x , then (d^2y)/(dx^2) is equal to (a)-m^2y (b) m^2...

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  12. If f(x)=(sin^(-1)x)/(sqrt(1-x^2)),t h e n(1-x^2)f^(x)-xf(x)= 1 (b) ...

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  13. If y=tan^(-1){((log)e(e//x^2))/((log)e(e x^2))}+tan^(-1)((3+2\ (log)e ...

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  14. Let f(x) be a polynomial. Then, the second order derivative of f(e^...

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  15. If y=acos((log)e x)+bsin((log)e x) , then x^2\ y2+x y1= (a) 0 (b) y (...

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  16. If x=2at at y=a t^2 , where a is a constant, then (d^2y)/(dx^2) at x=1...

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  17. If x=f(t) and y=g(t) , then (d^2y)/(dx^2) is equal to (f^(prime)g"-g'\...

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  18. If y=sin(m\ sin^(-1)x) , then (1-x^2)y2-x y1 is equal to m^2y (b) m y ...

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  19. If y=(sin^(-1)x)^2,\ then (1-x^2)y2 is equal to x y1+2 (b) x y1-2 (c)...

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  20. If y=e^(tanx) , then (cos^2x)y2= (1-sin2x)y1 (b) -(1+sin2x)y1 (c) (1...

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