# Thread: integration differentiation tricky problem

1. ## integration differentiation tricky problem

A wee bit confusing these problems for home study...anyone any idea's???

An alternating volt\age, V, is given by the formula
V = 250sin(100t + 0.63)
Find the first 4 times the voltage is 15 volts

2. Originally Posted by mucky
A wee bit confusing these problems for home study...anyone any idea's???

An alternating volt\age, V, is given by the formula
V = 250sin(100t + 0.63)
Find the first 4 times the voltage is 15 volts
Graph the line $y=250sin(100t+.63)$ and the line $y=15$ and graphically the first four points of intersection