Solve 9j+8j-7j

$$9 j + 8 j - 7 j$$

Evaluate

$$10j$$

Solution Steps

Combine 9j and 8j to get 17j.

$$17j-7j$$

Combine 17j and -7j to get 10j.

$$10j$$

Differentiate w.r.t. j

$$10$$

Steps Using Definition of a Derivative

Combine 9j and 8j to get 17j.

$$\frac{\mathrm{d}}{\mathrm{d}j}(17j-7j)$$

Combine 17j and -7j to get 10j.

$$\frac{\mathrm{d}}{\mathrm{d}j}(10j)$$

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

$$10j^{1-1}$$

Subtract 1 from 1.

$$10j^{0}$$

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

$$10\times 1$$

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

$$10$$