Schofield Whittaker
02/25/2024 · High School
\( f(x)=x^{3}+2 x^{2}+x+1 \) In tervalo \( [0,5] \) \( =50 \)
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It seems like you're asking for the evaluation of the function \( f(x) = x^3 + 2x^2 + x + 1 \) over the interval \([0, 5]\). However, it's not clear what you mean by "=50".
If you want to find the definite integral of \( f(x) \) from 0 to 5, we can calculate that. The definite integral will give us the area under the curve of the function from \( x = 0 \) to \( x = 5 \).
To find the definite integral, we first need to find the antiderivative of \( f(x) \):
\[
\int f(x) \, dx = \int (x^3 + 2x^2 + x + 1) \, dx
\]
Calculating the antiderivative:
\[
\int f(x) \, dx = \frac{x^4}{4} + \frac{2x^3}{3} + \frac{x^2}{2} + x + C
\]
Now, we evaluate this from 0 to 5:
\[
\int_0^5 f(x) \, dx = \left[ \frac{x^4}{4} + \frac{2x^3}{3} + \frac{x^2}{2} + x \right]_0^5
\]
Calculating at \( x = 5 \):
\[
= \frac{5^4}{4} + \frac{2 \cdot 5^3}{3} + \frac{5^2}{2} + 5
\]
Calculating each term:
1. \( \frac{5^4}{4} = \frac{625}{4} = 156.25 \)
2. \( \frac{2 \cdot 5^3}{3} = \frac{2 \cdot 125}{3} = \frac{250}{3} \approx 83.33 \)
3. \( \frac{5^2}{2} = \frac{25}{2} = 12.5 \)
4. \( 5 = 5 \)
Now, summing these values:
\[
\int_0^5 f(x) \, dx = 156.25 + 83.33 + 12.5 + 5
\]
Calculating the total:
\[
= 156.25 + 83.33 = 239.58
\]
\[
239.58 + 12.5 = 252.08
\]
\[
252.08 + 5 = 257.08
\]
Thus, the definite integral of \( f(x) \) from 0 to 5 is approximately \( 257.08 \).
If you meant something else by "=50", please clarify!
Quick Answer
The definite integral of \( f(x) = x^3 + 2x^2 + x + 1 \) from 0 to 5 is approximately 257.08.
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