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Tasya [4]
4 years ago
15

Which of these are expressions?

Mathematics
1 answer:
8090 [49]4 years ago
5 0

Step-by-step explanation:

An expression is something like 7x=63

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mel-nik [20]
\int\limits_{0}^{\frac{\pi }{6}}tan^2(x)sec^2(x)\cdot dx
\\------------------\\
u=tan(x)\implies \frac{du}{dx}=sec^2(x)\implies \frac{du}{sec^2(x)}=dx
\\------------------\\
\int\limits_{0}^{\frac{\pi }{6}}u^2sec^2(x)\cdot \cfrac{du}{sec^2(x)}\implies 
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\\ \quad \\


\textit{now, we need to change the bounds as well, so}
\\------------------\\
u(0)=tan(0)\implies 0
\\ \quad \\

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and surely you can take it from there,
recall, that, since we changed the bounds, with the u(x),
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Find the value of x in this image
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Good luck
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