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their brains and writing. they had to write it down unlike lazy kids these days.

Q: What did engineers use for complex calculations before calculators were invented?

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To do calculations using complex numbers.

In scientific calculators there is usually a button you press. Less complex calculators don't have that button. It looks like this: `____ \/

This probably refers to how to handle computations with the set of Complex Numbers (which is a combination of the set of real numbers and imaginary numbers), rather than just complicatedcalculations, or calculations which are very involved and as-such appear very complex (which is a different thing than Complex Numbers).

electrical engineers and quantum mechanics use them.

no, False

Related questions

To do calculations using complex numbers.

Computers were invented to make complex mathematical calculations possible and make tasks easier for humans.

Calculators, probably in the 1980's (I know for a fact the HP 48 calculator circa 1992 handled complex and imaginary numbers) helped people perform calculations with complex numbers, without having to figure conjugates, angles, etc. on paper. Complex number computing was long before that. I know that FORTRAN (developed by IBM and released in 1957) could handle complex number calculations. FORTRAN was designed specifically for scientific and engineering calculations. Check out the Wikipedia article.

Accuracy in calculation Reliability of answers Repeatedability Speed Complex calculations Will not have diminshed performance over a long period (except for battery life and operator fatigue)

Computers were first invented to perform calculations that were complex or repetitive in nature, in order to make human life easier.

Calculators are used in chemistry to perform mathematical calculations involving chemical formulas, mole conversions, stoichiometry, and more. They are essential for calculating molar mass, determining reaction yields, and solving other quantitative problems in chemistry. Calculators help scientists and students streamline computations and ensure accuracy in their work.

supercomputers

The Mayas invented zero before it was introdiced to Europe. This allowed them to make complex calculations.

In scientific calculators there is usually a button you press. Less complex calculators don't have that button. It looks like this: `____ \/

This probably refers to how to handle computations with the set of Complex Numbers (which is a combination of the set of real numbers and imaginary numbers), rather than just complicatedcalculations, or calculations which are very involved and as-such appear very complex (which is a different thing than Complex Numbers).

Observation

no, not unless the numbers are very large/complex or they have a lot of decimal places.