Asked by Anonymous
How does 114 become 4 from ∫[0,114](√1+4x^2/57^2)dx become ∫[0,4](√1+u^2(57/2du))
Answers
Answered by
Steve
If u=2x/57 then
du = 2/57 dx ---> dx = 57/2 du
If x=114 then u=4
du = 2/57 dx ---> dx = 57/2 du
If x=114 then u=4
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