Resources
Testimonials
Plans
Sign in
Sign up
Resources
Testimonials
Plans
AI tutor
Welcome to Bytelearn!
Let’s check out your problem:
Find the area of
\newline
the curved trapezoid bounded by the lines
y
=
3
x
+
6
y=3x+6
y
=
3
x
+
6
,
y
=
0
y=0
y
=
0
,
\newline
x
=
−
1
x=-1
x
=
−
1
,
x
=
2
x=2
x
=
2
. Use integration
View step-by-step help
Home
Math Problems
Calculus
Find indefinite integrals using the substitution and by parts
Full solution
Q.
Find the area of
\newline
the curved trapezoid bounded by the lines
y
=
3
x
+
6
y=3x+6
y
=
3
x
+
6
,
y
=
0
y=0
y
=
0
,
\newline
x
=
−
1
x=-1
x
=
−
1
,
x
=
2
x=2
x
=
2
. Use integration
Set up integral:
To find the area, we need to integrate the function
y
=
3
x
+
6
y=3x+6
y
=
3
x
+
6
between
x
=
−
1
x=-1
x
=
−
1
and
x
=
2
x=2
x
=
2
.
Calculate antiderivative:
Set up the integral:
A
=
∫
−
1
2
(
3
x
+
6
)
d
x
A = \int_{-1}^{2} (3x+6) \, dx
A
=
∫
−
1
2
(
3
x
+
6
)
d
x
.
Plug upper limit:
Calculate the antiderivative:
A
=
[
3
2
x
2
+
6
x
]
A = \left[\frac{3}{2} x^2 + 6x\right]
A
=
[
2
3
x
2
+
6
x
]
from
−
1
-1
−
1
to
2
2
2
.
Plug lower limit:
Plug in the upper limit:
A
=
[
3
2
×
2
2
+
6
×
2
]
−
[
antiderivative at lower limit
]
A = \left[\frac{3}{2} \times 2^2 + 6\times 2\right] - \left[\text{antiderivative at lower limit}\right]
A
=
[
2
3
×
2
2
+
6
×
2
]
−
[
antiderivative at lower limit
]
.
Simplify expression:
Plug in the lower limit:
A
=
[
3
2
×
2
2
+
6
×
2
]
−
[
3
2
×
(
−
1
)
2
+
6
×
(
−
1
)
]
A = \left[\frac{3}{2} \times 2^2 + 6\times 2\right] - \left[\frac{3}{2} \times (-1)^2 + 6\times (-1)\right]
A
=
[
2
3
×
2
2
+
6
×
2
]
−
[
2
3
×
(
−
1
)
2
+
6
×
(
−
1
)
]
.
Perform subtraction:
Simplify the expression:
A
=
[
3
2
×
4
+
12
]
−
[
3
2
×
1
−
6
]
A = \left[\frac{3}{2} \times 4 + 12\right] - \left[\frac{3}{2} \times 1 - 6\right]
A
=
[
2
3
×
4
+
12
]
−
[
2
3
×
1
−
6
]
.
Final calculation:
Perform the subtraction:
A
=
[
6
+
12
]
−
[
1.5
−
6
]
A = [6 + 12] - [1.5 - 6]
A
=
[
6
+
12
]
−
[
1.5
−
6
]
.
Area calculation:
Final calculation:
A
=
18
−
(
−
4.5
)
A = 18 - (-4.5)
A
=
18
−
(
−
4.5
)
.
Area calculation:
Final calculation:
A
=
18
−
(
−
4.5
)
A = 18 - (-4.5)
A
=
18
−
(
−
4.5
)
.The area of the curved trapezoid is
A
=
22.5
A = 22.5
A
=
22.5
square units.
More problems from Find indefinite integrals using the substitution and by parts
Question
Evaluate the integral.
\newline
∫
−
x
4
−
3
x
d
x
\int-x 4^{-3 x} d x
∫
−
x
4
−
3
x
d
x
\newline
Answer:
Get tutor help
Posted 2 months ago
Question
Evaluate the integral.
\newline
∫
6
x
3
e
−
2
x
d
x
\int 6 x^{3} e^{-2 x} d x
∫
6
x
3
e
−
2
x
d
x
\newline
Answer:
Get tutor help
Posted 2 months ago
Question
Evaluate the integral.
\newline
∫
x
5
3
x
d
x
\int x 5^{3 x} d x
∫
x
5
3
x
d
x
\newline
Answer:
Get tutor help
Posted 2 months ago
Question
Evaluate the integral.
\newline
∫
−
2
x
e
2
x
d
x
\int-2 x e^{2 x} d x
∫
−
2
x
e
2
x
d
x
\newline
Answer:
Get tutor help
Posted 2 months ago
Question
Evaluate the integral.
\newline
∫
−
2
x
cos
(
−
2
x
)
d
x
\int-2 x \cos (-2 x) d x
∫
−
2
x
cos
(
−
2
x
)
d
x
\newline
Answer:
Get tutor help
Posted 2 months ago
Question
Evaluate the integral.
\newline
∫
−
x
cos
(
−
3
x
)
d
x
\int-x \cos (-3 x) d x
∫
−
x
cos
(
−
3
x
)
d
x
\newline
Answer:
Get tutor help
Posted 2 months ago
Question
Evaluate the integral.
\newline
∫
6
x
2
5
3
x
d
x
\int 6 x^{2} 5^{3 x} d x
∫
6
x
2
5
3
x
d
x
\newline
Answer:
Get tutor help
Posted 2 months ago
Question
Evaluate the integral.
\newline
∫
−
6
x
4
−
4
x
d
x
\int-6 x 4^{-4 x} d x
∫
−
6
x
4
−
4
x
d
x
\newline
Answer:
Get tutor help
Posted 2 months ago
Question
Evaluate the integral.
\newline
∫
6
x
2
2
3
x
d
x
\int 6 x^{2} 2^{3 x} d x
∫
6
x
2
2
3
x
d
x
\newline
Answer:
Get tutor help
Posted 2 months ago
Question
Evaluate the integral.
\newline
∫
−
3
x
sin
(
−
2
x
)
d
x
\int-3 x \sin (-2 x) d x
∫
−
3
x
sin
(
−
2
x
)
d
x
\newline
Answer:
Get tutor help
Posted 2 months ago