How to Put Power in Calculator Ti 84

Basic Power Function Usage

To calculate a power (exponentiation) on your TI-84, follow these steps:

1. Press the ON button to turn on your calculator.
2. Enter the base number you want to raise to a power. For example, type 2 for 2.
3. Press the ^ button (located above the ) key).
4. Enter the exponent. For example, type 3 for 3.
5. Press ENTER to calculate the result.

The calculator will display the result of 2 raised to the power of 3, which is 8.

Using Negative Exponents

Negative exponents represent reciprocals. For example, 2^-3 is the same as 1/(2^3).

1. Enter the base number (e.g., 2).
2. Press the ^ button.
3. Enter the negative exponent (e.g., -3).
4. Press ENTER.

The calculator will display 0.125, which is the reciprocal of 8.

Fractional Exponents

Fractional exponents represent roots. For example, 8^(1/3) equals 2 because 2^3 equals 8.

1. Enter the base number (e.g., 8).
2. Press the ^ button.
3. Enter the fractional exponent (e.g., 1/3).
4. Press ENTER.

The calculator will display 2, which is the cube root of 8.

Common Errors and Fixes

Error: "ERROR: INVALID DIMENSION"

This error occurs when you try to use a fractional exponent with a negative base. For example, (-8)^(1/3) is not a real number.

Error: "ERROR: DIVIDE BY ZERO"

This error appears when you try to divide by zero. Ensure your denominator is not zero when using fractional exponents.

Solution: Clear the Calculator

If you encounter an error, press the CLEAR button (2nd + DEL) to reset the calculator and start over.

Advanced Features

Using Parentheses for Complex Expressions

You can combine exponentiation with other operations using parentheses:

1. Enter the expression (e.g., (2+3)^2).
2. Press ENTER.

The calculator will display 25, which is (2+3) squared.

Storing Results in Memory

To store a power calculation in memory:

1. Perform the calculation (e.g., 2^3).
2. Press STO (2nd + 5) followed by the memory location (e.g., A).

The result is now stored in memory location A.