Consider the curve defined by 2x²+3y²-4xy=36 . let x and y be the functions of time t that are related by the equation 2x² + 3y² -4xy =36. at time t =1, the valu eof x is 2, th evalue of y is -2, and the value of dy/dt is 4. find the value of dx/dt at time =1
