(Solved): \( d \) the most general antiderivative of \( f(x)=\tan ^{7} x \sec ^{4} x \) ...

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\( d \) the most general antiderivative of \( f(x)=\tan ^{7} x \sec ^{4} x \) \[ \begin{array}{l} \frac{1}{8} \tan ^{8} x+\frac{1}{6} \tan ^{6} x+C \\ 5 \tan ^{8} x+\ln (\sec x+\tan x)+C \\ \frac{1}{8} \tan ^{8} x+\frac{1}{10} \tan ^{10} x+C \end{array} \] None of these \[ \frac{1}{7} \sec ^{7} x+\frac{1}{8} \sec ^{4} x+C \]