Solve 90a*2a

$$90 a \times 2 a$$

Evaluate

$$180a^{2}$$

Solution Steps

Multiply a and a to get a^{2}.

$$90a^{2}\times 2$$

Multiply 90 and 2 to get 180.

$$180a^{2}$$

Differentiate w.r.t. a

$$360a$$

Steps Using Definition of a Derivative

Multiply a and a to get a^{2}.

$$\frac{\mathrm{d}}{\mathrm{d}a}(90a^{2}\times 2)$$

Multiply 90 and 2 to get 180.

$$\frac{\mathrm{d}}{\mathrm{d}a}(180a^{2})$$

The derivative of ax^{n} is nax^{n-1}.

$$2\times 180a^{2-1}$$

Multiply 2 times 180.

$$360a^{2-1}$$

Subtract 1 from 2.

$$360a^{1}$$

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

$$360a$$