\int _{ }^{ }\sin ^2x\cos ^2x
Question
\int _{ }^{ }\sin ^2x\cos ^2x
Solution
To solve the integral of , we can use the power-reduction identities and .
Substituting these identities into the integral, we get:
This simplifies to:
Now, we can use the power-reduction identity again on to get:
This integral can be split into two separate integrals:
The integral of dx is just x, and the integral of is . So, the final answer is:
where C is the constant of integration.
Similar Questions
1) Integrate the following functions:f(x)= (sinx+cosx)^2
What is the integral of the function f(x) = sin 2x?
Integrate the following functions:f(x)=sin(5x)cos(5x)
this case, a substitution method seems more straightforward. Let's use the substitution \(u = \sin(x)\), which implies that \(du = \cos(x) dx\). We can then express \(\cos^2(x)\) as \(1 - \sin^2(x)\) or \(1 - u^2\) to deal with the even power of cosine. The integral becomes: \[ \int u^3 (1 - u^2)^2 \cos(x) \, dx\] Since \(du = \cos(x) dx\), we can replace \(\cos(x) dx\) with \(du\): \[ \int u^3 (1 - u^2)^2 \, du\] Now we expand \((1 - u^2)^2\) and integrate term by term: \[ \int u^3 (1 - 2u^2 + u^4) \, du = \int (u^3 - 2u^5 + u^7) \, du\] Integrating each term separately: \[ \int u^3 \, du - 2 \int u^5 \, du + \int u^7 \, du = \frac{u^4}{4} - 2 \cdot \frac{u^6}{6} + \frac{u^8}{8} \] Simplify the coefficients: \[ \frac{u^4}{4} - \frac{u^6}{3} + \frac{u^8}{8} \] Now we substitute back \(u = \sin(x)\): \[ \frac{\sin^4(x)}{4} - \frac{\sin^6(x)}{3} + \frac{\sin^8(x)}{8} + C\] where \(C\) is the constant of integration. This is the antiderivative of \(\sin^3 x \cos^4 x\).
Find the integration of sin x cox(sin x)
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