જો $r = [2\phi + \cos^2(2\phi + \pi/4)]^{1/2}$ હોય,તો $\phi = \pi/4$ આગળ વિકલિત $dr/d\phi$ નું મૂલ્ય શું છે?

  • A
    $2\left( \frac{1}{\pi + 1} \right)^{1/2}$
  • B
    $2\left( \frac{2}{\pi + 1} \right)^{-1/2}$
  • C
    $2\left( \frac{1}{\pi + 1} \right)^{-1/2}$
  • D
    $2\left( \frac{2}{\pi + 1} \right)^{1/2}$

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Similar Questions

જો $f^{\prime}(x)=\tan ^{-1}(\sec x+\tan x),-\frac{\pi}{2} < x < \frac{\pi}{2}$ અને $f(0)=0$ હોય,તો $f(1)$ ની કિંમત શોધો.

જો $f(x) = \frac{1}{1 + \frac{1}{x}}$ અને $g(x) = \frac{1}{1 + \frac{1}{f(x)}}$ હોય, તો $g^{\prime}(2)$ ની કિંમત શોધો.

$x^{-3}(5+3x)$ નું વિકલન શોધો.

$\frac{d}{dx}\{ \log (\sec x + \tan x)\} = $

જો $f(x)$ એવો બહુપદી વિધેય હોય કે જેથી $f(x) = [f'(x)]^2$ અને $f(2) = 0$, તો $f(-2) = \dots$

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