Solve 1/5x^4

$$\frac { 1 } { 5 x ^ { 4 } }$$

Evaluate

$$\frac{1}{5x^{4}}$$

Steps for Raising Power to Another Power

Use the rules of exponents to simplify the expression.

$$\frac{1}{5x^{4}}$$

To raise the product of two or more numbers to a power, raise each number to the power and take their product.

$$\frac{1}{5}\times \frac{1}{x^{4}}$$

Differentiate w.r.t. x

$$-\frac{4}{5x^{5}}$$

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).

$$-\left(5x^{4}\right)^{-1-1}\frac{\mathrm{d}}{\mathrm{d}x}(5x^{4})$$

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}.

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

Simplify.

$$-20x^{3}\times \left(5x^{4}\right)^{-2}$$