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Find the antiderivative of
f
(
x
)
=
3
x
2
f(x) = 3x^2
f
(
x
)
=
3
x
2
.
May 7, 2024
Find the antiderivative of
f
(
x
)
=
3
x
2
f(x) = 3x^2
f
(
x
)
=
3
x
2
.
Generated Graph
Solution by Steps
step 1
To find the antiderivative of
f
(
x
)
=
3
x
2
f(x) = 3x^2
f
(
x
)
=
3
x
2
, we integrate the function with respect to
x
x
x
step 2
The integral of
3
x
2
3x^2
3
x
2
with respect to
x
x
x
is
∫
3
x
2
d
x
\int 3x^2 \, dx
∫
3
x
2
d
x
step 3
Applying the power rule for integration, which states that
∫
x
n
d
x
=
x
n
+
1
n
+
1
+
C
\int x^n \, dx = \frac{x^{n+1}}{n+1} + C
∫
x
n
d
x
=
n
+
1
x
n
+
1
+
C
for any real number
n
≠
−
1
n \neq -1
n
=
−
1
, we get
∫
3
x
2
d
x
=
3
⋅
x
2
+
1
2
+
1
+
C
\int 3x^2 \, dx = 3 \cdot \frac{x^{2+1}}{2+1} + C
∫
3
x
2
d
x
=
3
⋅
2
+
1
x
2
+
1
+
C
step 4
Simplifying the expression, we have
3
⋅
x
3
3
+
C
3 \cdot \frac{x^3}{3} + C
3
⋅
3
x
3
+
C
step 5
The constant multiples can be cancelled out, resulting in
x
3
+
C
x^3 + C
x
3
+
C
Answer
The antiderivative of
f
(
x
)
=
3
x
2
f(x) = 3x^2
f
(
x
)
=
3
x
2
is
x
3
+
C
x^3 + C
x
3
+
C
.
Key Concept
Power Rule for Integration
Explanation
The power rule for integration is used to find the antiderivative of a function of the form
x
n
x^n
x
n
, resulting in
x
n
+
1
n
+
1
+
C
\frac{x^{n+1}}{n+1} + C
n
+
1
x
n
+
1
+
C
when
n
≠
−
1
n \neq -1
n
=
−
1
.
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