* a' l' u M6 x, D: | j. y-1.543029953303134 7.105427357601002e-015, C, x9 A. E' [, C* ~; [
1.221035549850575 3.552713678800501e-015 0 a' ?# x/ E5 @ 8 _1 S3 V( n1 W用solve求解方程组,可获得复数解(需要多次求解,与实数解比较,获得复数解): 7 G% ]& s' a9 C' R" H2 Y; M) C o. [
!using["fcopt"]; ' q, Q: Q, e0 Z$ {
c: cf(x,y)= y=2*x^6-x^3+2*x*x+10*x-20; 8 N3 m1 x! I+ b+ G i `; a: B1 e* L