QUESTION 1 If w=f(x,y,z), x=u(r, s),y=v(r,t) and z=k(t) then what is дw. ar а. дw дwдх дw ду + де ду де Oь, де dy or де

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QUESTION 1 If w=f(x,y,z), x=u(r, s),y=v(r,t) and z=k(t) then what is дw. ar а. дw дwдх дw ду + де ду де Oь, де dy or де Ос. дw дх де дw дz dw ду + дz де dw ot dwдх + dt dr dx Os де до дwдх дw dt + дѕ оr дх де де де + де O d. dw II + де QUESTION 2 If w=f(x) and x=g(r, s), then what is дw ? дѕ a. дw = dwдх dw dx + dx dr dx as дѕ O b. dw дw дх