cari turunan menggunakan aturan turunan: y=cos(x2−1x+4)y=\cos\left(\frac{x^2-1}{x+4}\right)y=cos(x+4x2−1) y=cos5(4x−19)y=\cos^5\left(4x-19\right)y=cos5(4x−19) y=cos4(sinx3)y=\cos^4\left(\sin x^3\right)y=cos4(sinx3) y=(3x2+5)3(x3−11)4y=\left(3x^2+5\right)^3\left(x^3-11\right)^4y=(3x2+5)3(x3−11)4