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WP 34S solve an integral
04-23-2015, 09:05 PM (This post was last modified: 04-25-2015 07:39 PM by BarryMead.)
Post: #6
RE: WP 34S solve an integral
This version of the program uses label A as the start of the program and you put the
Target integral value into the X , the Upper solve guess bound in Y and the Lower solve guess Bound in Z and press A

Code:
LBL A
STO 00                  //Save target integral result desired
DROP                    //Lower stack to get Upper/Lower solve guess bounds
SLV 00
RTN
ERR 20                  //If solve fails to find a root show this error
LBL 00
0                       //Lower bound of integral (from zero to solve guess)
x <> Y
∫ 01
RCL 00                  //Value to solve for (to get upper integral bound)
x <> Y
-                       //Integral function returns zero when integral equals R00 target value
RTN
LBL 01

RTN

Then Press 0 Enter 5 Enter 10 A (Solves for X where the integral of x² from zero to X = 10) = 3.10723250595
Try 3 Enter 7 Enter 20 A (Solves for X where integral of x² from zero to X = 20) = 3.91486764117

I have found that even if you pick really bad guesses for the solve bounds, it usually still finds the right answer, but takes a little longer.
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Messages In This Thread
WP 34S solve an integral - lrdheat - 04-23-2015, 07:27 PM
RE: WP 34S solve an integral - lrdheat - 04-23-2015, 08:43 PM
RE: WP 34S solve an integral - BarryMead - 04-23-2015, 08:50 PM
RE: WP 34S solve an integral - BarryMead - 04-23-2015 09:05 PM
RE: WP 34S solve an integral - Dieter - 04-24-2015, 12:34 PM
RE: WP 34S solve an integral - BarryMead - 04-24-2015, 02:46 PM
RE: WP 34S solve an integral - CR Haeger - 04-23-2015, 10:28 PM
RE: WP 34S solve an integral - BarryMead - 04-23-2015, 10:34 PM
RE: WP 34S solve an integral - Dieter - 04-23-2015, 10:46 PM
RE: WP 34S solve an integral - walter b - 04-24-2015, 08:57 AM
RE: WP 34S solve an integral - CR Haeger - 04-24-2015, 01:24 PM
RE: WP 34S solve an integral - Dieter - 04-24-2015, 12:16 PM
RE: WP 34S solve an integral - CR Haeger - 04-24-2015, 01:01 PM
RE: WP 34S solve an integral - Dieter - 04-24-2015, 01:09 PM
RE: WP 34S solve an integral - rprosperi - 04-24-2015, 05:53 PM
RE: WP 34S solve an integral - Thomas_Sch - 04-24-2015, 06:22 PM
RE: WP 34S solve an integral - Dieter - 04-24-2015, 06:37 PM
RE: WP 34S solve an integral - Dieter - 04-25-2015, 10:48 AM
RE: WP 34S solve an integral - BarryMead - 04-25-2015, 06:59 PM
RE: WP 34S solve an integral - Dieter - 04-25-2015, 08:54 PM
RE: WP 34S solve an integral - lrdheat - 04-24-2015, 02:11 AM
RE: WP 34S solve an integral - Thomas_Sch - 04-24-2015, 06:19 AM
RE: WP 34S solve an integral - CR Haeger - 04-24-2015, 01:20 PM
RE: WP 34S solve an integral - Thomas_Sch - 04-24-2015, 07:07 PM
RE: WP 34S solve an integral - Dieter - 04-24-2015, 07:17 PM
RE: WP 34S solve an integral - Thomas_Sch - 04-24-2015, 07:30 PM
RE: WP 34S solve an integral - walter b - 04-24-2015, 10:12 PM
RE: WP 34S solve an integral - Thomas_Sch - 04-24-2015, 10:27 PM
RE: WP 34S solve an integral - lrdheat - 04-25-2015, 09:09 PM



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