જો $y = \cos^{2}\left(\frac{5x}{2}\right) - \sin^{2}\left(\frac{5x}{2}\right)$ હોય,તો $\frac{d^{2}y}{dx^{2}} = $

  • A
    $-5 \sqrt{1-y^{2}}$
  • B
    $5 \sqrt{1-y^{2}}$
  • C
    $25 y$
  • D
    $-25 y$

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ધારો કે $f(x) = \frac{\sin x + \cos x - \sqrt{2}}{\sin x - \cos x}$,$x \in [0, \pi] - \{\frac{\pi}{4}\}$. તો $f(\frac{7\pi}{12}) f''(\frac{7\pi}{12})$ ની કિંમત શોધો.

જો $x = \log t, t > 0$ અને $y = \frac{1}{t}$ હોય,તો $\frac{d^2 y}{d x^2} =$

જો $y=\frac{\log _e x}{x}$ અને $z=\log _e x$ હોય, તો $\frac{d^2 y}{d z^2}+\frac{d y}{d z}$ ની કિંમત શોધો.

જો $y=\tan ^{-1}\left(\frac{\sqrt{1+a^2 x^2}-1}{a x}\right)$ હોય, તો $\left(1+a^2 x^2\right)y''+2 a^2 x y'$ ની કિંમત શોધો.

જો $f(x) = \frac{x^2}{x+a}$ હોય,તો $f^{\prime \prime}(a)$ ની કિંમત શોધો.

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