- #1

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## Homework Statement

for [tex]\varphi[/tex](x,y)=2x+y+10 ,calculate the flux line integral...on a straight line from A(1,4) to B(5,1).

## Homework Equations

## The Attempt at a Solution

I tried to solve it but didnt get the right answer.

first i found the quation of the line which i found to be y=-(3/4)*x

and then i set x=t (parameter) and insert t into the y equation=-(3/4)*t. 1<t<5

dx=dt;dy=-(3/4)dt

and i used the formula for line integral which is [tex]\int[/tex](2x+y+10)*(dy,-dx)

i subtituted the values for x,y,dx and dt in to the above equation and integrated over 5 to 1..

the right answer is 92. i got -9.