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+--- Thread: (30b) Lambert w Programme for Solve (/thread-2728.html)
(30b) Lambert w Programme for Solve - Gerald H - 12-29-2014 09:59 AM
To find Lambert w function value for X, store X-value in memory 2, enter the programme listed below, exit programme, hold down shift
key & press & release ÷ & release shift key, see the prompt “SOLVE” & enter 1 & before you can say “Hey presto” the value of w is displayed.
Solve for memory 1 given memory 2 value returns w in the equation
X = w * e^w
Similarly, solving for memory 2 given memory 1 value returns the anti-Lambert w value, ie X in the above equation.
0 P6
1 RCL 1
2 Input
3 e^X
4 *
5 RCL-2
6 RTN