Solve f(7)7n/x*-2

$$f ( 7 ) \frac { 7 n } { x } \times - 2$$

Evaluate

$$-\frac{98fn}{x}$$

Solution Steps

Multiply 7 and -2 to get -14.

$$f\left(-14\right)\times \frac{7n}{x}$$

Express f\times \frac{7n}{x} as a single fraction.

$$\frac{f\times 7n}{x}\left(-14\right)$$

Express \frac{f\times 7n}{x}\left(-14\right) as a single fraction.

$$\frac{-f\times 7n\times 14}{x}$$

Multiply -1 and 7 to get -7.

$$\frac{-7fn\times 14}{x}$$

Multiply -7 and 14 to get -98.

$$\frac{-98fn}{x}$$

Differentiate w.r.t. x

$$\frac{98fn}{x^{2}}$$