Equation in solve app not solving

[Alfon]

Hi,
I put an equation into the Solve app- E1-

L= (P)* (1- (1/(1+R)^N))/R

Then put numerical values into L,P,R and tried to solve for N. I did this by pressing the Num key on the calculator then first pressing Blue-Shift clear to zero out anything in the variables then entering values. Then highlighted the value I wanted to solve for and pressed Solve then nothing happened.
It remained 0 (incorrectly).

Am I missing something here?

[Tim Wessman]

Which variable? What values did you enter?

[John Colvin]

The formula will solve for N with the appropriate guess values for the other variables. By clearing out all of the variables to zero, you will always get a "Bad Guess" error.
For example: L = 100, P = 50, R = 0.25 and solving for N gives N = 3.10628...

[Alfon]

Unfortunately it seems the solver app doesn't work right. I used eg L=100000 P=2000 R= 0.00281, tried to solve for N and nothing happened. Then I used my HP 50 and got the correct result (N=53.95...). I tried several other values as well, but the result doesn't come up correctly on the Prime?

[Helge Gabert]

Works fine for me in the solve app (53.956...). Version 6975.

What are your home settings? Did you try fsolve?

[Marcio]

The same here. In actually, this is one of the few areas where the Prime outperforms the 50g.

[Alfon]

Changed integers setting in Home Settings to Binary (was some other value before) and it works! Thanks.

PS subsequently also checked the digit grouping Setting in Home--looks like the , (comma) used for thousand place holder was giving me this error.