# Where is the INV button on a calculator?

## Where is the INV button on a calculator?

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The inverse function is located in the fifth row of the left column on the calculator. To enter the multiplicative inverse of a number, enter the number and press [x–1].

## How do I find the inverse of a 3×3 matrix?

To find the inverse of a 3×3 matrix, first calculate the determinant of the matrix. If the determinant is 0, the matrix has no inverse. Next, transpose the matrix by rewriting the first row as the first column, the middle row as the middle column, and the third row as the third column.

**How do you find the inverse of a 2×2 matrix?**

To find the inverse of a 2×2 matrix: swap the positions of a and d, put negatives in front of b and c, and divide everything by the determinant (ad-bc).

**What is the Black model of the Casio CFX-9850G Plus?**

Black model of the CFX-9850GB PLUS with protective slide cover, showing the menu-based interface on its screen. The Casio CFX-9850G series is a series of graphing calculators manufactured by Casio Computer Co., Ltd. from 1996 to 2008.

### What is included in the software library of The CFX-9850GB Plus?

The CFX-9850GB PLUS and CFX-9950GB PLUS models have a built-in software library, consisting of programs that perform complicated calculations and data processing. For example, operations on differential equations, digital caliper measurements, capacitor charge curves, figure rotations and Riemann sums.

### What is the CAS mode on a Casio calculator?

CAS (algebra mode), it is the first Casio calculator to include CAS, and the first calculator with color screen and CAS. The algebra mode can perform a lot of symbolic manipulations, like expand, solve, derivatives, integrals (definite or indefinite), etc.

**What is the difference between fx-9750 and fx-8930gt?**

(French versions: 9750=Graph 30,35,fx-8930GT; 9850,9950=Graph 60,65,CFX-9930GT,9940,9960; 9970=Graph 80) Power consumption is same as fx-9750.