Question

20. A piece of land is shaped like a right triangle. Two people start at the right angle of the triangle at the same
time, and walk at the same speed along different legs of the triangle. If the area formed by the positions of the
two people and their starting point (the right angle) is changing at 5 m2/s, then how fast are the people moving
when they are 2 m from the right angle? (Round your answer to two decimal places.)

a) 2.5 b) 5.00 c) 0.80 d) 1.25

22. Differenciate:

y=(x^2-2x+6)e^x

27. N(a)=12000+400 ln a

a>1

find N'(10)

Answer 1