ધારો કે $\cos ^{-1}(x) + \cos ^{-1} (2x) + \cos ^{-1}(3x) = \pi.$ જો $x$ એ ત્રિઘાત સમીકરણ $ax^3 + bx^2 + cx - 1 = 0$ નું સમાધાન કરે છે,તો $(a + b + c)$ ની કિંમત શોધો -

  • A
    $24$
  • B
    $25$
  • C
    $26$
  • D
    $27$

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$\sin ^{-1} x+\sin ^{-1}(1-x)=\cos ^{-1} x$ ના ઉકેલોની સંખ્યા કેટલી છે?

જો $\tan^{-1}\left(\frac{x-1}{x+1}\right) + \tan^{-1}\left(\frac{2x-1}{2x+1}\right) = \tan^{-1}\left(\frac{23}{36}\right)$ હોય,તો $x =$

વિધેયોની જોડી(ઓ) ઓળખો જે સમાન છે.

$\lim_{x \to 1/\sqrt{2}} \frac{x - \cos(\sin^{-1} x)}{1 - \tan(\sin^{-1} x)}$ ની કિંમત શોધો.

જો $y = \tan^{-1} \left( \frac{\ln(e/x^2)}{\ln(ex^2)} \right) + \tan^{-1} \left( \frac{3 + 2 \ln x}{1 - 6 \ln x} \right)$ હોય,તો $\frac{d^2y}{dx^2} =$

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