Thursday, September 22, 2022

$e^{1-x}dx$ integral | What is integral of e^1-x ?

You can reach integrate of e^1-x solution and answer.


What is integral of $e^{1-x}dx$ ?


integrate of e^1-x



Answer:

$\int e^{1-x}dx=?$

$\int e^{1-x}dx=-e^{1-x}+C$

Graph of tangent | What is the tan(x) graph drawing?

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Hello everyone dear friends. In this lesson, we will share with you what the tangent(x) graph is.


What is the graph of tanx?


The plot of tan(x) is as follows:


tangent graph


graph of tan(x)


Both graphs are graphs of tangent(x). You can use both. Thank you so much. We wish you success in your studies.


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 $\int \frac{x^2+1}{x^2-1}dx$?


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

You can reach integral of 1/x√x answer on this page.


What is integral of ∫1/x√x.dx?


integral of 1/x√x


Question:

$\int \frac{1}{x\sqrt{x}}dx$

Solution:

$\int \frac{1}{x\sqrt{x}}dx=\int x^{-\frac{3}{2}}dx=-\frac{2}{\sqrt{x}}+C$


Answer:

$\int \frac{1}{x\sqrt{x}}dx=-\frac{2}{\sqrt{x}}+C$


$\int sin^5{x}dx=?$ | What is integral of sinx^5

You can reach integral of sinx^5 answer on this page.


What is integral of ∫sinx^5dx?



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?

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You can reach integral of (lnx^2)/x answer on this page.

What is integral of ∫lnx^2/xdx?


Question:

$\int \frac{lnx^2}{x}.dx=?$

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) ?

You can reach integral of $x.e^{x^2}$ solutions.



What is integral of $x.e^{x^2}$ ?


x.e^x2 integrate solution



Solution:

$\int x.e^{x^2}dx=?$

Substituting $u = x^2$ and $\frac{1}{2} du = x.dx$, you get

$\int x.e^{x^2}dx=\frac{1}{2}\int e^u = \frac{1}{2}e^u+C=\frac{1}{2}e^{x^2}+C$