3√x -2/x^2

please show step by step of differentiation before combining the terms.

Step-by-step explanation:

Before we differentiate, let us assign a variable to the function. Let y be equal to the function i.e let y = 3√x -2/x²

In differentiation if , then where n is a constant and dy/dx means we are differentiating the function y with respect to x.

Applying the formula o the question given;

On differentiating the resulting function;

To combine the terms, we will add up by finding their LCM.

answer:  

step-by-step explanation:

here x represents the height of the pole,

and, the height of the shadow of the pole is 12 feet.

also, the angle of elevation from the top of the pole is 40°,

therefore,

by the low of sine,

which is the required equation for finding the value of x,