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Integrate the following intcos(2-7x)dx

Answer»

SOLUTION :`INT(COS(2-7x)dx=intcosthetacdot(-1/7d theta)`
put 2-7x=`theta` then `-7x=d"theta`or `dx=(-1/7)d"theta`
`(-1/7)sintheta+C=(-1/7sin(2-7x)+C`


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