Class 12 Book Solution from S N Dey in Second Order Derivative Question No: 11.4.5(i)(b)
\(s = \frac{1}{2}log(\frac{1+t}{1-t})\) হলে প্রমান করো যে, \(\frac{d^2s}{dt^2} = -(\frac{ds}{dt})^3.\frac{d^2t}{ds^2}\)
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Class 12 (দ্বাদশ শ্রেণী) S N Dey (এস এন দে - দ্বাদশ শ্রেণী) Other Chapter Solutions
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