
Finding the signed area between two functions
To nd the area between the two functions in the range –1.3 ≤ x ≤ 2.3:
1.
Tap and select Signed area.
2. Specify the start value for x.
Tap and press 1 3 .
3.
Tap .
4. Select the other function as the boundary for the integral. (If F1(X) is the currently selected function, you
would choose F2(X) here, and vice versa.)
124 Chapter 7 Function app
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