Question: 4 - For the equation M ( x , y ) d x + ( s i n x c o s y - x

4- For the equation M(x,y)dx+(sinxcosy-xy-e-y)dy=0, find the most general function M(x,y) so that the equation is exact.
4 - For the equation M ( x , y ) d x + ( s i n x

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