# Parameterised functions

• disregardthat
In summary, it is not possible to add more parameterised function slots on a TI-84 Plus Calculator, but you can use the Solver application, numerical integration techniques, or a graphing calculator app to solve equations with multiple variables and complex functions.
disregardthat
Hi, I have a TI-84 Plus Calculator and wonders wether it is possible to have two more of the parameterised function slots. I need to graph eight functions, but there is a restriction of six.

Do you know of any good ways of solving an equation on the calc? It is long and complex (but real) functions, it will take up to 15 lines on the calc screen, and it has both trigonometric and polynomial form. What I need is an approximation to the first solution of it to three digits. Newton's method won't do, as it will make the iteration function 50 lines long.

Thanks for help

Last edited:
Unfortunately, it is not possible to increase the parameterised function slots on a TI-84 Plus Calculator. However, there are some methods that you can use to solve the equation. One method is to use the Solver application on the calculator, which can solve equations with up to six variables. You can also use numerical integration techniques such as Simpson's Rule or the Trapezoidal Rule to approximate solutions to three digits. Finally, you could also try using a graphing calculator app on your smartphone or tablet, which may have more features available to help you solve the equation.

I can understand your need for additional parameterised function slots on your calculator. Unfortunately, the TI-84 Plus Calculator has a restriction of only six slots. However, there are some workarounds that you can try. One option is to use a graphing software on your computer that allows for more parameterised function slots. Another option is to create a table of values for your functions and plot them manually on your calculator.

In terms of solving your long and complex equation on the calculator, there are a few methods you can try. One option is to use the "solve" function on your calculator, which allows you to enter an equation and solve for a specific variable. Another option is to use the "zero" function, which allows you to find the x-intercept of a function, and then use that value as an approximation for the first solution.

However, if these methods do not give you the desired level of accuracy, you may need to use a more advanced mathematical software or programming language to solve your equation. These programs have the ability to handle longer and more complex equations and provide more precise solutions. I would recommend consulting with a mathematics expert or doing some research on these programs to find the best one for your needs.

## 1. What is a parameterised function?

A parameterised function is a function that takes one or more parameters as inputs and uses them to produce a result. These parameters act as placeholders for values that will be passed into the function when it is called.

## 2. Why are parameterised functions useful?

Parameterised functions are useful because they allow us to write reusable code that can be used with different inputs. This saves time and effort, as we don't have to write a separate function for each possible input.

## 3. How do you declare a parameterised function?

To declare a parameterised function, you need to specify the function name, the parameters it will take, and the code that will be executed when the function is called. For example, in JavaScript:
function addNumbers(x, y) {    return x + y; }
This function takes two parameters, x and y, and returns their sum.

## 4. Can parameterised functions have default values for parameters?

Yes, parameterised functions can have default values for parameters. This means that if no value is passed in for a particular parameter when the function is called, it will use the default value instead. This can be useful for cases where a parameter is optional.

## 5. Are parameterised functions different from regular functions?

Yes, parameterised functions are different from regular functions in that they take one or more parameters as inputs. Regular functions, on the other hand, do not take any parameters and use only the code within the function to produce a result. Both types of functions have their own uses and advantages, depending on the situation.

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