The value of `int_(-pi)^(pi) sin^(3) x cos^(2)x dx` is
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To solve the integral \( \int_{-\pi}^{\pi} \sin^3 x \cos^2 x \, dx \), we will first determine whether the integrand is an odd or even function.
### Step 1: Identify the function
Let \( f(x) = \sin^3 x \cos^2 x \).
### Step 2: Check if the function is odd or even
To determine if \( f(x) \) is odd or even, we will compute \( f(-x) \):
\[
f(-x) = \sin^3(-x) \cos^2(-x)
\]
Using the properties of sine and cosine, we know:
- \( \sin(-x) = -\sin(x) \)
- \( \cos(-x) = \cos(x) \)
Thus, we have:
\[
f(-x) = (-\sin x)^3 \cdot (\cos x)^2 = -\sin^3 x \cdot \cos^2 x = -f(x)
\]
Since \( f(-x) = -f(x) \), this shows that \( f(x) \) is an odd function.
### Step 3: Apply the property of definite integrals
We can use the property of definite integrals that states:
\[
\int_{-a}^{a} f(x) \, dx = 0 \quad \text{if } f(x) \text{ is an odd function}
\]
In our case, since \( f(x) \) is odd and we are integrating from \(-\pi\) to \(\pi\):
\[
\int_{-\pi}^{\pi} \sin^3 x \cos^2 x \, dx = 0
\]
### Final Answer
Thus, the value of the integral is:
\[
\int_{-\pi}^{\pi} \sin^3 x \cos^2 x \, dx = 0
\]
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To solve the integral \( \int_{-\pi}^{\pi} \sin^3 x \cos^2 x \, dx \), we will first determine whether the integrand is an odd or even function.
### Step 1: Identify the function
Let \( f(x) = \sin^3 x \cos^2 x \).
### Step 2: Check if the function is odd or even
To determine if \( f(x) \) is odd or even, we will compute \( f(-x) \):
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