Mathematics Mathematics & Economics Essay Research (Essay Sample)

Instructions:

the assignment was about solving mathematical problems

source..

Content:

MATHEMATICS
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1 xsin3x
let u=x du=dx
dv=sin3x v=-cos3x
uv-vdu replacing the value -x+cos3x-sin3x+c
2
cosα-sinαsinα-cosα
det=-cos∝2+sin∝2
inverse A-1=-cos∝sin∝-sin∝cos∝
-cos∝cos∝2+sin∝2sin∝cos∝2+sin∝2-sin∝cos∝2+sin∝2cos∝cos∝2+sin∝2
3
y=mx+1 and y=4x Find m
equate the equation mx+1=4x
square both sides mx2+1=4x
collect like terms mx2-4x=-1
mx=-1+4x
m=-1x+ 2
4 x2-y2+2xy dxdy
fx,y=x2-y2+2xy dxdy
fx=2x-y2+2y y is constant
fy=x2-2y+2x x is constant
5

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