Solve d/dx(2x^3-3x)^-4

$$\frac { d } { d x } ( 2 x ^ { 3 } - 3 x ) ^ { - 4 }$$

Evaluate

$$\frac{12\left(1-2x^{2}\right)}{\left(x\left(2x^{2}-3\right)\right)^{5}}$$

Steps Using Chain Rule

If F is the composition of two differentiable functions f\left(u\right) and u=g\left(x\right), that is, if F\left(x\right)=f\left(g\left(x\right)\right), then the derivative of F is the derivative of f with respect to u times the derivative of g with respect to x, that is, \frac{\mathrm{d}}{\mathrm{d}x}(F)\left(x\right)=\frac{\mathrm{d}}{\mathrm{d}x}(f)\left(g\left(x\right)\right)\frac{\mathrm{d}}{\mathrm{d}x}(g)\left(x\right).

$$-4\left(2x^{3}-3x^{1}\right)^{-4-1}\frac{\mathrm{d}}{\mathrm{d}x}(2x^{3}-3x^{1})$$

The derivative of a polynomial is the sum of the derivatives of its terms. The derivative of a constant term is 0. The derivative of ax^{n} is nax^{n-1}.

$$-4\left(2x^{3}-3x^{1}\right)^{-5}\left(3\times 2x^{3-1}-3x^{1-1}\right)$$

Simplify.

$$\left(2x^{3}-3x^{1}\right)^{-5}\left(-24x^{2}+12x^{0}\right)$$

For any term t, t^{1}=t.

$$\left(2x^{3}-3x\right)^{-5}\left(-24x^{2}+12x^{0}\right)$$

For any term t except 0, t^{0}=1.

$$\left(2x^{3}-3x\right)^{-5}\left(-24x^{2}+12\times 1\right)$$

For any term t, t\times 1=t and 1t=t.

$$\left(2x^{3}-3x\right)^{-5}\left(-24x^{2}+12\right)$$

Differentiate w.r.t. x

$$\frac{12\left(52x^{4}-48x^{2}+15\right)}{\left(x\left(2x^{2}-3\right)\right)^{6}}$$