ramal filled 3 pages in a stamp album. this is one sixth of a page in an album. how many pages are there in the ramal's stamp al
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Just remember, for y, just leave the dy/dx there
3x²+3(2xy+x²dy/dx)+3y²dy/dx=0
3x²+6xy+3x²dy/dx+3y²dy/dx=0
minus (3x²+6xy) from both sides
3x²dy/dx+3y²dy/dx=-3x²-6xy
undistribute dy/dx
dy/dx(3x²+3y²)=-3x-3xy
divide both sides by (3x²+3y²)
3x²+3(2xy+x²dy/dx)+3y²dy/dx=0
3x²+6xy+3x²dy/dx+3y²dy/dx=0
minus (3x²+6xy) from both sides
3x²dy/dx+3y²dy/dx=-3x²-6xy
undistribute dy/dx
dy/dx(3x²+3y²)=-3x-3xy
divide both sides by (3x²+3y²)