Solve 0,87+4-2*0,5x

$$0,87 + 4 - 2 \times 0,5 x$$

Evaluate

$$4,87-x$$

Solution Steps

Add 0,87 and 4 to get 4,87.

$$4,87-2\times 0,5x$$

Multiply 2 and 0,5 to get 1.

$$4,87-x$$

Differentiate w.r.t. x

$$-1$$

Steps Using Derivative Rule for Sum

Add 0,87 and 4 to get 4,87.

$$\frac{\mathrm{d}}{\mathrm{d}x}(4,87-2\times 0,5x)$$

Multiply 2 and 0,5 to get 1.

$$\frac{\mathrm{d}}{\mathrm{d}x}(4,87-x)$$

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}.

$$-x^{1-1}$$

Subtract 1 from 1.

$$-x^{0}$$

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

$$-1$$