Thursday, September 22, 2022
Wednesday, September 21, 2022
$\int \frac{x^2+1}{x^2-1}dx=?$ | What is integral of (x^2+1)/(x^2-1)
You can reach integral of (x^2+1)/(x^2-1) answer on this page.
What is integral of $\int \frac{x^2+1}{x^2-1}dx$?
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integral of (x^2+1)/(x^2-1) |
Solution:
Performing polynomial long division, we have that:
$\int \frac{x^2+1}{x^2-1}dx=\int (1+\frac{2}{x^2-1})dx$
$=\int dx + \int \frac{2}{x^2-1}dx$
$=x+\int \frac{2}{x^2-1}dx$
Using partial fraction on the remaining integral, we get:
$\frac{2}{x^2-1}=\frac{A}{x-1}+\frac{B}{x+1}=\frac{A(x+1)+B(x-1)}{(x+1)(x-1)}=\frac{(A+B)x+(A-B)}{x^2-1}$
Thus, A + B = 0 and A − B = 2. Adding the two equations together yields 2.A = 2, that is, A = 1, and B = − 1. So, we have that:
$\int \frac{2}{x^2-1}dx=\int \frac{1}{x-1}dx-\int \frac{1}{x+1}dx$
Therefore,
$\int \frac{x^2+1}{x^2-1}dx=x+\int \frac{2}{x^2-1}dx$
$=x+\int \frac{1}{x-1}dx-\int \frac{1}{x+1}dx$
$=x+ln|x-1|-ln|x+1|+C$
Answer :
$\int \frac{x^2+1}{x^2-1}dx=x+ln|x-1|-ln|x+1|+C$
Tuesday, September 20, 2022
$\int \frac{1}{x\sqrt{x}}dx$ | What is integral of 1/x√x
$\int sin^5{x}dx=?$ | What is integral of sinx^5
You can reach integral of sinx^5 answer on this page.
What is integral of ∫sinx^5dx?
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integrate of sinx^5 |
Evaluate $\int sin^5{x}dx$.
Rewrite the function:
$\int sin^5{x}.dx=\int sinx.sin^4x.dx=\int sinx(sin^2x)^2.dx=\int sinx(1-cos^2x)^2.dx$
Now use u=cosx, du=-sinxdx:
$\int sinx(1-cos^2x)^2.dx=\int -(1-u^2)^2du=\int -(1-2u^2+u^4)du$
=$-u+\frac{2}{3}u^3-\frac{1}{5}u^5+C$
=$-cosx+\frac{2}{3}cos^3x-\frac{1}{5}cos^5x+C$
Answer:
$\int sin^5{x}.dx=-cosx+\frac{2}{3}cos^3x-\frac{1}{5}cos^5x+C$
Monday, September 19, 2022
$\int \frac{lnx^2}{x}.dx=?$ | What is integral of lnx^2/x?
You can reach integral of (lnx^2)/x answer on this page.
What is integral of ∫lnx^2/xdx?
Question:
$\int \frac{lnx^2}{x}.dx=?$
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lnx^2/x integrate |
Solution:
Substituting u = lnx and $du = \frac{1}{x}dx$ , you get
$\int \frac{lnx^2}{x}dx=\int \frac{2lnx}{x}dx=2.\int u.du=2.\frac{1}{2}u^2+C = (lnx)^2+C$
$\int \frac{lnx^2}{x}.dx=(lnx)^2+C$
Sunday, September 18, 2022
$x.e^{x^2}$ integral | What is integral of x.e^(x^2) ?
Graph of sin | What is the sin(x) graph drawing?
Hello everyone dear friends. In this lesson, we will share with you what the sin graph is.
What is the graph of sin(x)?
The plot of sin(x) is as follows:
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sin graph |
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sinx graph |
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sinx graph |
Here are 3 different sinx charts.
All three graphs are sinx's graphs. You can use all three. Thank you so much. We wish you success in your work.