Q. If x3+4−5x2=−5y+y2 then find dxdy at the point (1,5).Answer: dxdy∣∣(1,5)=
Implicit Differentiation: To find the derivative of y with respect to x, dxdy, we need to implicitly differentiate both sides of the equation with respect to x.Given equation: x3+4−5x2=−5y+y2Differentiate both sides with respect to x:dxd[x3+4−5x2]=dxd[−5y+y2]Using the power rule and chain rule, we get:3x2−10x=−5dxdy+2ydxdy
Isolating dxdy: Now we need to solve for dxdy by isolating it on one side of the equation.3x2−10x=−5dxdy+2ydxdyCombine like terms:dxdy(2y−5)=3x2−10xNow, divide both sides by (2y−5) to solve for dxdy:dxdy=2y−53x2−10x
Evaluate at (1,5): We need to evaluate dxdy at the point (1,5).Substitute x=1 and y=5 into the equation:dxdy=2(5)−53(1)2−10(1)Simplify the equation:dxdy=10−53−10dxdy=5−7
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