Question

1) A man is in a boat 2 miles from the nearest point on the
coast. He is to go to point *Q*, located 3 miles down the
coast and 1 mile inland (see figure). He can row at a rate of 4
miles per hour and walk at 4 miles per hour. Toward what point on
the coast should he row in order to reach point *Q* in the
least time? (Round your answer to two decimal places.

2) Find the differential *dy* of the given function.

y = e^{−0.7x} cos 7x

will you please answer both? would be really appreciated

Answer #1

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