Solution: Area Between Curves #1
Solution: Area Between Curves #1
Find the area between the curve:
[latex]\Large{y =x^2-2x}[/latex], and the x-axis
for the interval: [latex][2, 4][/latex]
We are being asked to find the area under the given function for the specified intervals. Note that since we are computing the area between the function and the x axis, all we need to do is computer the definite integral as we normally would.
Step 1:
The definite integral is as follows:
[latex]\large{\int_{2}^{4}(x^2-2x)dx = (\frac{1}{3}x^3 – x^2)|_{2}^{4}}[/latex]
Step 2:
Now we can apply the fundamental theorem of calculus to evaluate. This states that:
[latex]\large{\int_{a}^{b}f(x) dx = F(b) – F(a)}[/latex]
Applying the fundamental theorem of calculus, we have:
[latex]\large{\int_{2}^{4}(x^2-2x) dx = [\frac{1}{3}(4)^3 – (4)^2] – [\frac{1}{3}(2)^3 – (2)^2]}[/latex]
[latex]\large{ \approx 5.33 – (- 1.33)}[/latex]
[latex]\large{\approx 6.67}[/latex]
Thus, the area between the function [latex]y = x^2-2x[/latex] and the x axis is approximately 6.67 units.
Solution Completed!
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Solution: Area Between Curves #1
Find the area between the curve:
[latex]\Large{y =x^2-2x}[/latex], and the x-axis
for the interval: [latex][2, 4][/latex]
We are being asked to find the area under the given function for the specified intervals. Note that since we are computing the area between the function and the x axis, all we need to do is computer the definite integral as we normally would.
Step 1:
The definite integral is as follows:
[latex]\large{\int_{2}^{4}(x^2-2x)dx = (\frac{1}{3}x^3 – x^2)|_{2}^{4}}[/latex]
Step 2:
Now we can apply the fundamental theorem of calculus to evaluate. This states that:
[latex]\large{\int_{a}^{b}f(x) dx = F(b) – F(a)}[/latex]
Applying the fundamental theorem of calculus, we have:
[latex]\large{\int_{2}^{4}(x^2-2x) dx}[/latex]
[latex]\large{ = [\frac{1}{3}(4)^3 – (4)^2] – [\frac{1}{3}(2)^3 – (2)^2]}[/latex]
[latex]\large{ \approx 5.33 – (- 1.33)}[/latex]
[latex]\large{\approx 6.67}[/latex]
Thus, the area between the function [latex]y = x^2-2x[/latex] and the x axis is approximately 6.67 units.
Solution Completed!
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