Question

solve
$x \sqrt{1 + {x}^{2} } dy + x \sqrt{1 + {y}^{2} } dx$
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Answer 1

Answer:

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Answer 2

Answer:

To Simplify/Solve the expression

1. First use communtative property to reorder the terms:

$dxy\sqrt{1+x^2}+x\sqrt{1+y^2}dx$

2. Then calculate the product:

$dxy\sqrt{1+x^2}+dx^2\sqrt{1+y^2}$

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