请问mesh()

giftedlike

formula is too long that i get faint...
how to mesh(s,p,k)   with 0<s,p,k<1,pls

k= 1/2*(2*a*s^2-8*a*s^2*p+8*a*s^2*p^2-2*s*p-s^2+2*s^2*p+s+(8*a*s^2*p-4*a*s^2-36*s^2*p-8*a*s*p+36*s^2*p^2+4*a^2*s^2-18*s^3+9*s^4-48*a*s^3*p-96*a*s^4*p^2+48*a*s^4*p+96*a*s^3*p^2-64*a*s^3*p^3+64*a*s^4*p^3+8*a*s^3-8*a*s^4+72*s^3*p+36*s^4*p^2-36*s^4*p-72*s^3*p^2+9*s^2+16*a^2*s^2*p^2+4*a*s-16*a^2*s^2*p)^(1/2))/s/(4*a*s*p^2-4*a*s*p+a*s-2*p+1+2*s*p-s)
in which we let a=1 anyway to get reshape

giftedlike

这个应该不难啊，盼哪位大侠复！