What should happen if you enter a number on a calculator and press the reciprical key twice? Why?
Can someone please help me with my problems, please?
the reciprocal of the reciprocal of a number brings back the original number
e.g.
n = 4/3
the reciprocal of n = 3/4
the reciprocal of that reciprocal = 4/3
the only exception is the number zero, the reciprocal of zero is undefined.
13/18 divided by 20/27
3/5
If you enter a number on a calculator and press the reciprocal key twice, you should get the original number back. This is because the reciprocal function, represented by the "1/x" key, calculates the reciprocal of a number, which means it finds the value that, when multiplied by the original number, equals 1.
When you press the reciprocal key once, it calculates the reciprocal of the entered number. For example, if you enter the number 5 and press the reciprocal key, the calculator will display 0.2, since 1 divided by 5 equals 0.2.
Now, if you press the reciprocal key again on the result, it calculates the reciprocal of the calculated value, which should give you the original number back. In the previous example, if you press the 1/x key again, the calculator would display the number 5. This is because 1 divided by 0.2 equals 5.
So, pressing the reciprocal key twice on any given number should yield the original number as the final result.