Let u = 3x+2 ⇒ y = u². dy/du = 2u, du/dx = 3 ⇒ dy/dx = 2(3x+2)×3 = 6(3x+2).
Let u = 5x+1 ⇒ y = u^(1/2). dy/du = (1/2)u^(-1/2), du/dx = 5 ⇒ dy/dx = (1/2)(5x+1)^(-1/2)×5 = 5/(2√(5x+1)).
Let u=2x ⇒ y=sin u ⇒ dy/du=cos u, du/dx=2 ⇒ dy/dx=cos(2x)×2=2cos(2x).
dy/dx = -sin(3x+π) × derivative of (3x+π)=3 ⇒ dy/dx = -3sin(3x+π).
Let u=4x² ⇒ y=e^u ⇒ dy/du=e^u, du/dx=8x ⇒ dy/dx = e^(4x²)×8x = 8xe^(4x²).
dy/dx = (1/(7x+3)) × derivative of (7x+3)=7 ⇒ dy/dx = 7/(7x+3).
Let u=x²+1 ⇒ y=u³ ⇒ dy/du=3u², du/dx=2x ⇒ dy/dx=3(x²+1)²×2x=6x(x²+1)².
dy/dx = sec²(5x) × derivative of (5x)=5 ⇒ dy/dx=5sec²(5x).
Let u=sin x ⇒ y=u^(1/2). dy/du=(1/2)u^(-1/2), du/dx=cos x ⇒ dy/dx=cos x / (2√(sin x)).
y = (1+e^x)^(-1). dy/dx = -1(1+e^x)^(-2) × derivative of (1+e^x)=e^x ⇒ dy/dx = -e^x/(1+e^x)².