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(This is part of a DJGriffiths, 3rd ed., problem: Prob. 1.28)

Line Integral: Int(yzdy)[lower limit = (1,1,0); upper limit = (1,1,1)]but y does not change and is supposed to be integrated, while z changes and is not integrated.

I have 2 questions:

[1] I take z out of the integral since the integral is only along the y direction,

z*Int(ydy) = zy^2/2 .

Now evaluate: ... but z is changing - is the line integral a fnc of z?

[2] Trying to evaluate the above "answer" I get z*y^2/2 (from y=1 to y=1) which means z*(1/2 - 1/2) = 0.

Edit:at first I thought that z (or y) can be expressed as a fnc of y (or z) but that is not the case for this line segment.

thx in advance!

-LD

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# Line Integral: Int(yzdy) but

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