你如何将y = 2y ^ 2 + 3x ^ 2-2xy转换为极坐标方程?

你如何将y = 2y ^ 2 + 3x ^ 2-2xy转换为极坐标方程?
Anonim

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))#