# First Derivative

## Find y’ if x = 2 arccos 2t and y = 4 arcsin 2t

**Problem**

Find *y’* if *x* = 2 arccos 2*t* and *y* = 4 arcsin 2*t*.

A. 2 | C. 4 |

B. -2 | D. -4 |

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## Maxima and Minima | Applications

**Graph of the Function y = f(x)**

The graph of a function y = f(x) may be plotted using Differential Calculus. Consider the graph shown below.

As x increases, the curve rises if the slope is positive, as of arc AB; it falls if the slope is negative, as of arc BC.

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