d. im por, y) can always be evaluated by direct substitution when (C) p is a log

Question

d. im por, y) can always be evaluated by direct substitution when (C) p is a logarithmic function (A) p is a polynomial (B) p is a rational function (D) p is an exponential function (E) p is a radical function 8. The projection of u (2,3,3) onto v (3,0,4) is (E) None of these (B) 18 (A) (3,0,4) (C) (2,3,3) 9. If f(r, y, z) .xze" then fr equals (D) e +1) (B) xe 1) (A) rye 1) x, y) cosxy+20, then fr (m/2,) equals 10. If f (E) /2. (C) -1 (B) 1 (A) 0 11. A model airplane is flying horizontally due north at 20 mi/hr en it encounters a horizontal crosswind blowing east at 20 mihr and a downdraft blowing vertically downward at 10 r. Find the speed of the plane relative to the ground. (E) 30 mi/hr (D) 28 mi/hr (C) 25 mi/hr (B) 22 mi/hr (A) 20 milhr

Explanation / Answer

ans : cos(pi/2) + 20 = 0 + 20 = 20

D) is correct

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