Question

find absolute maxima and absolute minima of function f(x,y)=(4x-x2)cosy on rectangular plate 1<=x<=3; -pi/4<=y<=pi/4
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Answer 1

Answer:

a) ( √3× - 2y )²

b) ( x/6 - y/5 )²

c) ( 4x + y)²

d) ( 2x + 9 ) ( 2x - 7 )

e) ( 4x/5 + y/4 ) ( 4x/5 + 3y/4 )

Answer 2

Answer:

Between each layer of the atmosphere is a boundary. Above the troposphere is the tropopause, above the stratosphere is the stratopause, above the mesosphere is the mesopause, and above the thermosphere is the thermopause. At these "pauses," maximum change between the "spheres" occur.

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