On a normal scientific calculator that only has the following buttons:

Plus key

Minus Key

0-9 Number Keys

Memory Button

Reciprocal Key

Can you derive a formula for finding the product of any integer A and B?

Thanks!

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- February 16th 2013, 03:20 PMBlacksheep1337Calculator Button Problem
On a normal scientific calculator that only has the following buttons:

Plus key

Minus Key

0-9 Number Keys

Memory Button

Reciprocal Key

Can you derive a formula for finding the product of any integer A and B?

Thanks! - March 15th 2013, 02:34 PMHallsofIvyRe: Calculator Button Problem
That's NOT a "normal scientific calculator"! To divide A by B, multiply A times 1/B. With no multiplication button, "multiply" A times 1/B by adding 1/B to itself A times.