Find the area enclosed by the curve 2x + 3y = 12, lines x = 1 and x = 5.
Answers
Given : 2x + 3y = 12, lines x = 1 and x = 5.
To Find : area enclosed
Solution:
2x + 3y = 12
x = 1 and x = 5
2x + 3y = 12 and x = 1
=> 2 + 3y = 12
=> y = 10/3
2x + 3y = 12 and x = 5
=> 10 + 3y = 12
=> y = 2/3
x = 1 and x = 5 does not intersects
Hence we do not get any closed figure
if We find area using x axis Then we get trapezium with parallel side length
= 10/3 and 2/3
and height = 5 - 1 = 4
Area = (1/2) ( 10/3 + 2/3) * 4
= 8 sq units
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Given:
- 2x + 3y = 12
- x = 1
- x = 5
To find:
Area enclosed by the curve with the x axis ?
Calculation:
We will use definite integral to solve this question.
- First of all, refer to the graph.
- The line 2x + 3y = 12 is being intersected by x=1 and x=5.
- So, out upper and lower limits of integration will be 5 and 1 respectively.
Let area be A :
So, area is 8 units.