A calculus problem by A Former Brilliant Member
Calculus
Level
3
x sin (a+b)+cos(a-b).log[sec(x-b)]+c
x cos(a-b)+ sin(a-b). log [sec(x-b)]+c
x sin (a-b)+cos(b-a).log[sec(x-b)]+c
x cos (a-b)+sin(a+b).log[sec(x-b)]+c
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1 solution
writ numerator as cos(x - b - (a -b) ) and then expand and its integration is simple