- #1
tnutty
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Homework Statement
Find dy/dx ;
sqrt(xy) = 1 + yx^2
or
0 = 1 + yx^2 - sqrt(xy)
Definition :
dy/dx = - F_x / F_y;
A = F_x = 2xy - 1/2 (xy)^-0.5 * y
B = F_y = x^2 - 1/2(xy)^-0.5 * x
Then dy/dx = -A / B
But the answer according to the book, is this :
4(xy)^-1.5 - y
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x - 2x^2/(sqrt(xy))