W(s,t)=F(u(s,t),v(s,t)), where F, u, and v are
differentiable.

If u(3,0)=−3u, us(3,0)=−7us(3,0)=-7, ut(3,0)=4, v(3,0)=3,
vs(3,0)=−8, vt(3,0)=−2vt(3,0)=-2, Fu(−3,3)=6, and Fv(−3,3)=−1, t
= W(s, t) = F(u(s, t), v(s, t)), where F, u, and v are differentiable. If u(3,0) -3, ug(3,0) – 7, (3,0) = 4, v(3,0) = 3, vs(3,0) = – 8, v(3,0) = -2, Ful - 3,3) = 6, and F,( - 3,3) = 1, then find t