# Virtual Calculator For GATE 2019

## About Virtual Calculators and their use in GATE

The Graduate Aptitude Test in Engineering (GATE) is a competitive examination for engineers to secure admission for post-graduate programs in Indian Institutions. Electronic devices such as mobile phones, programmable watches, and electronic calculators are not allowed in competitive examinations such as GATE. However, the use of virtual calculators is allowed. It’s a scientific calculator which allows the candidate to perform basic and complex mathematical operations such as square root, cube root, trigonometric, modulus, exponential, logarithmic, hyperbolic functions, etc.

A candidate who’s well-prepared with the virtual calculator should be able to manage his/her time efficiently in the GATE examination and also maintain a sound test-taking strategy.

## Features of the Virtual Calculator

• There is no requirement to press the ‘Shift’ or ‘INV’ keys as the inverse functions have independent keys.
• The inverse functions for hyperbolic functions and trigonometric functions such as sin, cos, tan are placed under the respective functions. For instance, sin(-1) will be located under sin on the virtual calculator.
• On top of the virtual calculator, there are two boxes wherein the functions are performed and the calculator displays the result respectively.
• The numeric keys and operators are present on the right side of the virtual calculator for carrying out the functions.
• The scientific functions and actions are available on the left-hand side of the virtual calculator.

## Do's of the GATE Virtual Calculator

• Always press the key [C] while starting a fresh calculation.
• Make use of the predefined actions such as p (Pi), log, Exp to save time during calculation.
• Apply the memory function for measuring cumulative totals.
1. [M+]: The function will add the displayed value to memory
2. [MR]: This function will revive the value stored in memory
3. [M-]: This function will subtract the displayed value from memory
• Use the calculator for determining an equation using parenthesis and additional mathematical operations.
• Ensure to pick the angle unit (Deg or Rad) before starting the calculation.

Important note: The angle unit is set as degree by default.

## Dont's of the GATE Virtual Calculator

• Execute various operations simultaneously.
• Leave parenthesis unbalanced.
• Switch the angle unit (Deg or Rad) while executing a calculation.

## Limitations of the GATE Virtual Calculator

• The keyboard function is disabled in the virtual calculator.
• The result for Logarithmic and Hyperbolic calculations is accurate only up to 5 numbers.
• The result for a Factorial calculation is accurate only up to 14 numbers.
• The range of content supported by the virtual calculator is 10(-323) to 10(308).
• Modulus (mod) function carried on decimal numbers with 15 numbers would not be accurate.

Important note: A candidate must use mod operation only if the number includes less than 15 numbers, i.e., the mod function yields accurate results for fewer numbers.

If the candidate encounters any difficulties in the application of the GATE virtual calculator, they can simply click on the ‘HELP’ button located on the top right of the calculator to check the Do’s, Don't, and the limitations of the virtual scientific calculator.

You may also be interested in: GATE 2019 Preparation Strategy and Exam tips

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