In algebraic geometry, a quartic plane curve is a plane algebraic curve of the fourth degree. It can be defined by a bivariate quartic equation: A x 4 + B y 4 + C x 3 y + D x 2 y 2 + E x y 3 + F x 3 + G y 3 + H x 2 y + I x y 2 + J x 2 + K y 2 + L x y + M x + N y + P = 0 , {\displaystyle Ax^{4}+By^{4}+Cx^{3}y+Dx^{2}y^{2}+Exy^{3}+Fx^{3}+Gy^{3}+Hx^{2}y+Ixy^{2}+Jx^{2}+Ky^{2}+Lxy+Mx+Ny+P=0,} with at least one of A, B, C, D, E not equal to zero.
In algebraic geometry, a quartic plane curve is a plane algebraic curve of the fourth degree. It can be defined by a bivariate quartic equation: A x 4 + B y 4 + C x 3 y + D x 2 y 2 + E x y 3 + F x 3 + G y 3 + H x 2 y + I x y 2 + J x 2 + K y 2 + L x y + M x + N y + P = 0 , {\displaystyle Ax^{4}+By^{4}+Cx^{3}y+Dx^{2}y^{2}+Exy^{3}+Fx^{3}+Gy^{3}+Hx^{2}y+Ixy^{2}+Jx^{2}+Ky^{2}+Lxy+Mx+Ny+P=0,} with at least one of A, B, C, D, E not equal to zero.
Source: Wikipedia "Quartic plane curve" · CC BY-SA 4.0
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