Find and characterize the critical points of f(x, y) = 8xy(x + y) + 17. c. p. 2 find the absolute extremes of f(x, y) = 3x2 + 2xy + y2 over the domain d with -2

so then what are you asking?

step-by-step explanation:

i would you but i don't under stand the qustion

step-by-step explanation:

answer: cos [   arcsin (3/5) - arccos (1/2) ] =

step-by-step explanation: × = 3/5 = 0.6--> x = 36.87 and x = 180 - 36.87 = 143.13 deg

cos y = 1/2 --> y = +- 60 deg a. cos (x - y) = cos (143.13 - 60) = cos 83,13  

=

0.12

b. cos (36.87 - 60) = cos (-23.23) = 0.92