Asked by Megan
How do you integrate
square root of (4-x^2) ?
Pleasee help!
square root of (4-x^2) ?
Pleasee help!
Answers
Answered by
Count Iblis
put x = 2 sin(t)
then dx = 2 cos(t) dt
sqrt[4 - x^2] dx = 2 cos^2(t) dt
Then, you use:
cos^2(t) = 1/2[cos(2t) + 1]
then dx = 2 cos(t) dt
sqrt[4 - x^2] dx = 2 cos^2(t) dt
Then, you use:
cos^2(t) = 1/2[cos(2t) + 1]
Answered by
Count Iblis
Correection:
sqrt[4 - x^2] dx = 4 cos^2(t) dt
sqrt[4 - x^2] dx = 4 cos^2(t) dt
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