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Homework Statement
[tex]
\int_a^b\,dx\int_a^x\,dy [/tex] should give area of a triangle, I can’t see how.
The Attempt at a Solution
[tex]
\int_a^b\,dx\,{(x-a)} [/tex] but then I won’t get 1/2 (ab)… (don't get the first brackets in latex between the two x)
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