જો $f(x) = \sin x + \cos x$ હોય,તો $f\left(\frac{\pi}{4}\right) f^{(iv)}\left(\frac{\pi}{4}\right)$ ની કિંમત શોધો.

  • A
    $1$
  • B
    $2$
  • C
    $3$
  • D
    $4$

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$y = a \cos x + (b + 2x) \sin x \Rightarrow y^{\prime \prime} + y = $

જો $(a+b x) e^{\frac{y}{x}}=x$ હોય,તો $\frac{d^2 y}{d x^2}=$

જો $y = \frac{\log x}{x}$ હોય,તો $x = 1$ આગળ $\frac{d^2 y}{d x^2}$ ની કિંમત શોધો.

જો ત્રણ વિધેયો $f(x)$,$g(x)$ અને $h(x)$ એવા હોય કે $h(x) = f(x) \cdot g(x)$ અને $f^{\prime}(x) \cdot g^{\prime}(x) = c$,જ્યાં $c$ અચળ છે,તો $\frac{f^{\prime \prime}(x)}{f(x)} + \frac{g^{\prime \prime}(x)}{g(x)} + \frac{2c}{f(x) \cdot g(x)}$ ની કિંમત શું થાય?

$n \in \mathbb{N}$ માટે,$\log x$ નું $n$-મું વિકલન શોધો,એટલે કે $\frac{d^{n}}{d x^{n}}(\log x) = $

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