Calculus
f′(x)=122cosx+3sinxf^{\(\prime\)}\(\left\)(x\(\right\))=\(\frac{12}{2\cos x+3\sin x}\)
f′(x)=122cosx−3sinxf^{\(\prime\)}\(\left\)(x\(\right\))=\(\frac{12}{2\cos x-3\sin x}\)
f′(x)=12(2cosx+3sinx)2f^{\(\prime\)}\(\left\)(x\(\right\))=\(\frac{12}{\left(2\cos x+3\sin x\right)^2}\)
f′(x)=12(2cosx−3sinx)2f^{\(\prime\)}\(\left\)(x\(\right\))=\(\frac{12}{\left(2\cos x-3\sin x\right)^2}\)