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A student plots the curve y = 1/(1 + x²) and wants the… | StemPy Lab
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A student plots the curve y = 1/(1 + x²) and wants the exact area under it from x = 0 to x = 1, with the x-axis below. Lengths are in centimetres. What is the area, in square centimetres?
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High School (11–12)
Functions and Calculus › Application of Integrals
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StemPy Lab
A student plots the curve
y
=
1
1
+
x
2
y = \dfrac{1}{1 + x^2}
y
=
1
+
x
2
1
and wants the exact area under it from
x
=
0
x = 0
x
=
0
to
x
=
1
x = 1
x
=
1
, with the
x
x
x
-axis below. Lengths are in centimetres. What is the area, in square centimetres?
3
4
cm
2
\dfrac{3}{4}\ \text{cm}^2
4
3
cm
2
π
4
cm
2
\dfrac{\pi}{4}\ \text{cm}^2
4
π
cm
2
π
2
cm
2
\dfrac{\pi}{2}\ \text{cm}^2
2
π
cm
2
ln
2
cm
2
\ln 2\ \text{cm}^2
ln
2
cm
2
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← A cycle path in a nature reserve has the profile y = (x - 1)(x - 2)(x - 3) for 1 ≤ x ≤ 3, with x in kilometres and y in kilometres, as in the figure. The path crosses a reference line y = 0 at three points. The reserve wants the total area between the profile and the reference line. What is this area, in square kilometres?
Two curves meet at x = 1 and at x = 4. Between these two values the curve y = p(x) lies above the curve y = q(x). Which integral gives the area of the region enclosed between the two curves? →
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Functions and Calculus › Application of Integrals
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