Choose the correct alternative. The integrating factor of dy/dx - y = e^x is ex, then its solution is

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The integrating factor of dy/dx -y = e^x is ex, then its solution is ye −x = x + c Explanation dy/dx -y = e^x Here, I.F. = e–x , Q = ex $\therefore$ Solution of the given equation is `y ( I.F.) = int Q ( I.F.) dx + c $\therefore$ ye ^-x = int e^xe^-x dx+c $\therefore$ ye ^-x = int 1dx + c` $\therefore$ ye –x = x + c

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