| Main centres: | 1-3 business days |
| Regional areas: | 3-4 business days |
| Remote areas: | 3-5 business days |
The Casio fx-991es plus is a non-programmable, non-graphing scientific calculator with a Natural Textbook Display for easy equation input, a solar and battery dual power source, and numerous functions including complex number calculation, matrix operations, and integration/differentiation. Key features include 417 functions, a 10+2 digit display, memory functions, and a hard case for portability.
Key Features > Display: Natural Textbook Display shows equations and results like they appear in textbooks.
> Power: Dual power source (solar and battery).
Functions:
> Basic: Brackets, fractions, square root, pi, percentages, factorials, complex numbers, base-n calculations.
> Advanced: Integration and differentiation.
Statistics: Q1, Med, Q3 calculations.
> Other: Matrix and vector calculations.
> Memory: 9 variable memories, independent memory, and answer memory.
> Other: Auto power off, hard case included, and a non-programmable, non-graphing design.
