- #1
lalah
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Homework Statement
I'm trying to reverse the order of integration of
[tex]\int_0^{81}\int_{y/9}^{\sqrt{y}} dx dy[/tex]
first integral is from 0 to 81
second integral is from y/9 to [tex]\sqrt{y}[/tex]
The problem is, I identified the inequalities for the regions of integration, but I'm having problems understanding how the graph is formed.
Homework Equations
The Attempt at a Solution
I understand the inequalities are y/9 < x < [tex]\sqrt{y}[/tex]
and 0 < y <81.
But I don't understand the graph.
x-axis is 0 to 9
y-axis is 0 to 81
y = x^2
y = 9x
And since according to the homework problem I'm doing, I can't progress the problem until I understand why the graph is so.
Also, can someone help me in formating the integrals in latex?
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