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jmrec100
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Homework Statement
Integrate cos[(pi/9)(x^2)
Homework Equations
Is there a trig identity for the cos(x^2) ?
The Attempt at a Solution
U=(pi/9)T^2
dU= [2(pi)/9] (T)dT dT= dU/ {[2(pi)/9 (T)]}
Substitute in get cosU dU/ {[2(pi)/9 (T)]} Now what?