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+--- Forum: HP Prime (/forum-5.html)
+--- Thread: Solver variable question (/thread-4251.html)
Solver variable question - TechAlex - 06-28-2015 08:20 PM
Hello all,
I am trying to write a program, actually I got it working, but I want to create variables of two or more letters. How can I accomplish that?
The "FV" local variable down below if I use it, let's say, FV=...., the Solver creates two variables, now the equation is wrong.
I want to create a variable of three characters for "M", like "PMT"
EXPORT TVM_Test()
BEGIN
LOCAL FV;
STARTAPP("Solve");
"F=P*(1+((R/100)/N))^(N*T)+M*((1+((R/100)/N))^(N*T)-1)/((R/100)/N)"▶E1;
PRINT();
PRINT("NOTE: This Equation Will Solve for Any Unknown Variable.");
PRINT(" ");
PRINT("P = Present Value");
PRINT("F = Future Value");
PRINT("R = Interest Rate");
PRINT("T = Numbers of Years");
PRINT("N = Compounds per Year.");
PRINT("M= Amount of payment or deposit.");
PRINT(" ");
PRINT("Press ENTER ↲ to Continue...");
// Display Solver
CHECK(1);
STARTVIEW(2,1);
END;
Thank you.
RE: Solver variable question - roadrunner - 06-28-2015 09:07 PM
Do you mean like this?
Code:
EXPORT PMT;
EXPORT TVM_Test()
BEGIN
LOCAL FV;
STARTAPP("Solve");
"F=P*(1+((R/100)/N))^(N*T)+PMT*((1+((R/100)/N))^(N*T)-1)/((R/100)/N)"▶E1;
PRINT();
PRINT("NOTE: This Equation Will Solve for Any Unknown Variable.");
PRINT(" ");
PRINT("P = Present Value");
PRINT("F = Future Value");
PRINT("R = Interest Rate");
PRINT("T = Numbers of Years");
PRINT("N = Compounds per Year.");
PRINT("PMT= Amount of payment or deposit.");
PRINT(" ");
PRINT("Press ENTER ↲ to Continue...");
// Display Solver
CHECK(1);
STARTVIEW(2,1);
END;RE: Solver variable question - TechAlex - 06-29-2015 12:14 AM
(06-28-2015 09:07 PM)roadrunner Wrote: Do you mean like this?
Code:
EXPORT PMT;
EXPORT TVM_Test()
BEGIN
LOCAL FV;
STARTAPP("Solve");
"F=P*(1+((R/100)/N))^(N*T)+PMT*((1+((R/100)/N))^(N*T)-1)/((R/100)/N)"▶E1;
PRINT();
PRINT("NOTE: This Equation Will Solve for Any Unknown Variable.");
PRINT(" ");
PRINT("P = Present Value");
PRINT("F = Future Value");
PRINT("R = Interest Rate");
PRINT("T = Numbers of Years");
PRINT("N = Compounds per Year.");
PRINT("PMT= Amount of payment or deposit.");
PRINT(" ");
PRINT("Press ENTER ↲ to Continue...");
// Display Solver
CHECK(1);
STARTVIEW(2,1);
END;
I dont think this will work. What I want is to find out how to declares variables of two or more characters, for example, "PMT" instead of just "M", or "FV" instead of "F", or "%R" instead of just "R", etc., so the Solver can use them., so the data entry screen can be more meaningful. See attach image.
Thank you for replying .
RE: Solver variable question - roadrunner - 06-29-2015 03:15 AM
[/quote]
I dont think this will work.
[/quote]
You're right, I type it in wrong before. It wouldn't let me use PMT and FV, I believe because those are already variables built in to the finance app. It did let me use lower case variables, pmt and fv. Like in the attachment:
[attachment=2234]
The HP Prime is a fantastic calculator, but has a very steep learning curve. Right now I am at the bottom of that curve.
Road
RE: Solver variable question - TechAlex - 06-29-2015 03:29 AM
I dont think this will work.
[/quote]
You're right, I type it in wrong before. It wouldn't let me use PMT and FV, I believe because those are already variables built in to the finance app. It did let me use lower case variables, pmt and fv. Like in the attachment:
The HP Prime is a fantastic calculator, but has a very steep learning curve. Right now I am at the bottom of that curve.
Road
[/quote]
Thank you, Road. It works like a charm. I agree with you, the Prime has not match. I got hardware version A, I contacted HP, they replaced it with hardware version C. PM me if you would like to know the details.