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B
23(x+y)+19log(3x+3y+4|=x+c
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C
23(x+y)+19log(3x+3y|=x+c
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D
19log(3x+3y+4|=x+c
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Solution
The correct option is B23(x+y)+19log(3x+3y+4|=x+c Herea1a2=b1b2Letx+y=v1+dydx=dvdxdydx=dvdx−1dvdx−1=v+12v+3dvdx=3v+42v+3∫2v+33v+4dv=∫dx+c23∫dv+13∫13v+4dv=x+c23v+19log(3v+4|=x+c23(x+y)+19log(3x+3y+4|=x+c