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Обчисли площу фігури, обмеженої лініями
\newline
y
=
1
3
x
,
x
−
3
y
+
3
=
0
,
x
=
3
.
y=\frac{1}{3^{x}}, x-3 y+3=0, x=3 \text {. }
y
=
3
x
1
,
x
−
3
y
+
3
=
0
,
x
=
3
.
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Math Problems
Geometry
Find properties of a parabola from equations in general form
Full solution
Q.
Обчисли площу фігури, обмеженої лініями
\newline
y
=
1
3
x
,
x
−
3
y
+
3
=
0
,
x
=
3
.
y=\frac{1}{3^{x}}, x-3 y+3=0, x=3 \text {. }
y
=
3
x
1
,
x
−
3
y
+
3
=
0
,
x
=
3
.
Rewrite Equation:
Rewrite the equation
x
−
3
y
+
3
=
0
x - 3y + 3 = 0
x
−
3
y
+
3
=
0
to express
y
y
y
in terms of
x
x
x
.
\newline
y
=
x
+
3
3
y = \frac{x + 3}{3}
y
=
3
x
+
3
Set Range for
x
x
x
:
Set the range for
x
x
x
based on the given
x
=
3
x = 3
x
=
3
.
\newline
The range of
x
x
x
is from negative infinity to
3
3
3
.
Set up Integral:
Set up the integral to find the area between
y
=
1
3
x
y = \frac{1}{3^x}
y
=
3
x
1
and
y
=
x
+
3
3
y = \frac{x + 3}{3}
y
=
3
x
+
3
from
x
=
−
∞
x = -\infty
x
=
−
∞
to
x
=
3
x = 3
x
=
3
.
\newline
Area =
∫
−
∞
3
[
x
+
3
3
−
1
3
x
]
d
x
\int_{-\infty}^{3} \left[\frac{x + 3}{3} - \frac{1}{3^x}\right] dx
∫
−
∞
3
[
3
x
+
3
−
3
x
1
]
d
x
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(C)
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\newline
(D)
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\newline
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16
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(
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