Examples: 2 (df) Estimate by a differential the change in f from (32, 16) to (35, 18), given that 2 f(x,y)=yx³ +x√√y Use differential to estimates √√273√1021 "estimate value" (estimates f(x,y) = √√7³²√5₂) df 3. Given that y=kw/4, where k is a constant. Calculate the approximate percentage in y if w is increase by 3% and 1 is decreased by 2.5% .1 4. Approximate the value of 3 T (4.03) (2.98) cos by using total differential. 3

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