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(Solved): Let f(x,y)=x22xy,r(t)=cos(t),sin(t). Use the Chain Rule to calculate dtdf(r(t)) at the ...
Let f(x,y)=x2?2xy,r(t)=?cos(t),sin(t)?. Use the Chain Rule to calculate dtd?f(r(t)) at the value t=(?). (Use symbolic notation and fractions where needed.) dtd?f(r(t))???t=??=