回答:
#R = sintheta /(2sin ^的2θ+ 3cos ^的2θ-SIN(的2θ))#
说明:
为此,我们需要:
#X = rcostheta#
#Y = rsintheta#
#rsintheta = 2(rsintheta)^ 2 + 3(rcostheta)^ 2-2(rcostheta)(rsintheta)#
#rsintheta = 2R ^ 2sin ^的2θ+ 3R ^ 2COS ^的2θ-2R ^ 2costhetasintheta#
#sintheta = 2rsin ^的2θ+ 3rcos ^的2θ-2rcosthetasintheta#
#sintheta = 2rsin ^的2θ+ 3rcos ^的2θ-RSIN(的2θ)#
#sintheta = R(2sin ^的2θ+ 3cos ^的2θ-SIN(的2θ))#
#R = sintheta /(2sin ^的2θ+ 3cos ^的2θ-SIN(的2θ))#