solve using quotient rule
I dont understand how to use this rule in order to solve.
gf1-g-f/g2
+129845 The Quotient Rule says that if we have functions f and g such that f / g ...... the derivative =
[ f ' * g - f * g ' ] / [ g] ^2
So we have
f = cosx f ' = -sinx
g = x^2 g ' = 2x
g^2 = (x^2)^2 = x^4
Using the formula, we have
[ -sinx * x^2 - cosx * 2x ] / [ x^2]^2 =
x [ -sinx *x - cosx * 2] / [ x^4] =
- [ xsinx - 2cosx ] / x^3
