$\frac{1+\tanh \left(\frac{x}{2}\right)}{1-\tanh \left(\frac{x}{2}\right)} = $

  • A
    $e^{-x}$
  • B
    $e^x$
  • C
    $2 e^{x/2}$
  • D
    $2 e^{-x/2}$

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Similar Questions

यदि $\left[1-\cos \left(\frac{\pi}{2}+\alpha\right)+\sin \left(\frac{3 \pi}{2}+\alpha\right)\right]^2+\left[1-\sin \left(\frac{3 \pi}{2}-\alpha\right)-\cos \left(\frac{3 \pi}{2}+\alpha\right)\right]^2=a+b \sin ^2\left(\frac{\pi}{4}+\alpha\right)$,तो $a^2+b^2=$

मान लीजिए $\triangle ACB$ एक त्रिभुज है जिसमें $C$ पर समकोण है। यदि $AB = 29$ इकाई,$BC = 21$ इकाई और $\angle ABC = \theta$ है,तो $\cos^2 \theta - \sin^2 \theta = $

$\tan \left(-\frac{23 \pi}{3}\right)-\cot \left(\theta-\frac{13 \pi}{3}\right) =$

alpha अक्षर को दर्शाने वाले प्रतीक की पहचान करें: $ \alpha $

$\frac{1}{1+\sin \theta}+\frac{1}{1-\sin \theta} = $

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