Solve 2m-2m+2a-m+m-1

$$2 m - 2 m + 2 a - m + m - 1$$

Evaluate

$$2a-1$$

Solution Steps

Combine 2m and -2m to get 0.

$$2a-m+m-1$$

Combine -m and m to get 0.

$$2a-1$$

Differentiate w.r.t. a

$$2$$

Steps Using Derivative Rule for Sum

Combine 2m and -2m to get 0.

$$\frac{\mathrm{d}}{\mathrm{d}a}(2a-m+m-1)$$

Combine -m and m to get 0.

$$\frac{\mathrm{d}}{\mathrm{d}a}(2a-1)$$

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}.

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

Subtract 1 from 1.

$$2a^{0}$$

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

$$2\times 1$$

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

$$2$$