tictaclp said:function [ f, f1] = funyder( z )
%funcion y primera derivada del primer ejercicio
f=1-1/(1-x+2*z^2)
f1=(4*z-1)/(1-z+2*z^2)^2
this doesn't work .
Thanks
The error message "Undefined function or variable 'x'" means that the code is trying to use a function or variable called 'x' that has not been defined or declared yet. This could be due to a typo, missing code, or incorrect scope.
To fix this error, you will need to define or declare the function or variable 'x' before using it in your code. This could involve creating a function with the name 'x', assigning a value to a variable named 'x', or ensuring the scope of 'x' is correct.
There are several possible reasons for this error, such as a typo in the code, forgetting to declare or define 'x', or using 'x' outside of its scope. It is important to carefully check your code and ensure that all functions and variables are properly defined and used.
Yes, a misspelled variable name can cause this error. If you misspell a variable name, the code will try to use a variable that does not exist, resulting in the "Undefined function or variable 'x'" error. It is important to pay attention to spelling and naming conventions when writing code.
Yes, there is a difference between these two types of errors. An "Undefined function 'x'" error means that the code is trying to call a function named 'x' that has not been defined, while an "Undefined variable 'x'" error means that the code is trying to use a variable named 'x' that has not been declared or assigned a value. Both errors can be fixed by properly defining or declaring the function or variable in question.