(J). Let f(x,y)=and g(u,u) = f(x(u,U),y(u, U), where x(u,บ) = u2 -3uU + 2U2 and y(u, ข) = น4+ 3นข3 - 4U4. Find at the point u = 1 and u= 1.
阿摩線上測驗
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and g(u,u) = f(x(u,U),y(u, U), where x(u,บ) = u2 -3uU + 2U2 and y(u, ข) = น4+ 3นข3 - 4U4. Find 
at the point u = 1 and u= 1.