If \(\int\frac{2^x}{\sqrt{1-4^x}}dx=k\sin^{-1}(2^x)+c\) then \(k=\)1\(\frac{1}{2}\log 2\)2\(\log 2\)3\(\frac{1}{\log 2}\)4\(-\frac{1}{2}\log 2\)Answer & explanation+Correct answer: option 3Put \(2^x=t\)
