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maali5
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Homework Statement
A generated AC voltage has a value given by V = 4cos2θ.
You will need to use the identity cos^2θ = 1/2(1+cos2θ)
a) Find the mean value of the voltage over a full cycle (0 ≤ θ ≤ 2π) using integral calculus
b) Find the r.m.s. value of the voltage over a full cycle (0 ≤ θ ≤ 2π) using integral calculus
Homework Equations
The Attempt at a Solution
4∫cos2x dx u = 2x du= 2dx du/2 = dx
4∫ cos u du
2 sin 2x +c
What is next now?