## Using libraries in Fortran

## Using libraries in Fortran

(OP)

Hello everyone.

I'm wondering, how to use libraries in programming. For example, I need to make program that finds minimum and maximum of a function of two variables... As I understood, I can use routines i find online, but need to have something saved on PC? Some module file?

One more question, as I started first with finding ways to find a derivative of a funtion, I'm wondering how can I enter my f(x) into program? For example the program starts, it asks me to type in the f(x)=x^2+2xy+y^3 ...I don't understand how is that interpreted by program, does it parse the f(x) somehow; turns it in some array? How it reads this expression and turn it to arguments needed for derivation?

Please if someone can answer my questions...I have problems with concept understanding, cause I'm new in this and need to explore some things for project I'm doing on the university...

Thanks in advance!

I'm wondering, how to use libraries in programming. For example, I need to make program that finds minimum and maximum of a function of two variables... As I understood, I can use routines i find online, but need to have something saved on PC? Some module file?

One more question, as I started first with finding ways to find a derivative of a funtion, I'm wondering how can I enter my f(x) into program? For example the program starts, it asks me to type in the f(x)=x^2+2xy+y^3 ...I don't understand how is that interpreted by program, does it parse the f(x) somehow; turns it in some array? How it reads this expression and turn it to arguments needed for derivation?

Please if someone can answer my questions...I have problems with concept understanding, cause I'm new in this and need to explore some things for project I'm doing on the university...

Thanks in advance!

## RE: Using libraries in Fortran

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## RE: Using libraries in Fortran

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