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If the "hyper ellipse" E is defined by x^4/a + y^4/b=1 where a & b are positive constants.
Find a formula for the derivative as a function of x & y
if the tangent line to E at (x0,y0) has equation cx+dy=1, please find c&d.
Find a formula for the derivative as a function of x & y
if the tangent line to E at (x0,y0) has equation cx+dy=1, please find c&d.