Texas Instruments MathPrint TI-30X Pro - Numerical Integral

MathPrint™ Mode
% Q pastes the numerical integral template from the keypad to calculate the
numerical integral on a given interval with the default tolerance H is 1EM5.
Example in RADIAN Angle Mode
% Q q " <
% Q
0 " g " "
z X z ) "
<
To change the default tolerance, H, and observe how the tolerance plays a role in the
numerical solution, paste the numerical integral from the menu location, d MATH
8:fnInt(, where the numerical integral template will paste with the option to modify
the tolerance as needed for an investigation of the numerical integral result.
Example in DEGREE Angle Mode
d
MATH
8:fnInt(
with
optional
tolerance
q <
d 8
0 " 3 "
z G 5 <
Classic Mode or Entry
In Classic mode or in classic edit lines, the fnInt( command will paste from the keypad
or MATH menu.
Syntax: fnInt(expression,variable,upper,lower[,tolerance]) where tolerance is
optional and the default H is 1EM5.
Example
% Q
or
d
MATH
8:fnInt(
% Q
z G 5 % .
z % .0 % .3 )
<
³ Problem
Find the area under the curve f(x) = Mx
2
+4 on the x intervals from M2 to 0 and then from
0 to 2. What do you notice about the results? What could you say about the graph of
this function?
Math Functions 29