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OCW Scholar - Single Variable Calculus 7 Online
OpenStudy (anonymous):

During trig substitution, if the term under the square root is (25x^2)+4, how do I turn it into the form x^2 + a^2?

OpenStudy (anonymous):

25X^2+4 = 25*[X^2+(2/5)^2] then use a*tan(theta) substitution.

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