3 years ago

How many numbers are reciprocal of themselves?

Mathematics

1 answer:

const2013 [10]3 years ago

6 0

Answer:

two: +1 and -1

Step-by-step explanation:

If a number is equal to its own reciprocal, it will satisfy the equation ...

x = 1/x

Multiplying by x and subtracting 1 gives ...

x^2 -1 = 0

This factors as ...

(x -1)(x +1) = 0

By the zero product rule, the solutions are those values of x that make one or more factors zero:

x = 1

x = -1

There are two self-reciprocals.

You might be interested in

What is the distance between -12 and -8

marissa [1.9K]

Answer:

The distance between -12 and -8 is 4.

Step-by-step explanation:

hope this helps

6 0

3 years ago

Convert the rectangular coordinates (3,4) into polar coordinates

kirza4 [7]

-3,-4 is the answer “convert the rectangular coordinates (3,4) into polar coordinates

3 0

2 years ago

Please answer need to turn it in please help me answer

Elena-2011 [213]

Answer: Sir in what way would you like me to explain this

Step-by-step explanation:

4 0

1 year ago

How do you solve this?

Katarina [22]

So hmm notice the first picture, that's the "inscribed angle theorem", as you'd know

now, notice angle 2 in yours on the second picture

8 0

3 years ago

What is the distance between (−11,−20) and (−11,5) ?

swat32

Answer:

the answer is option D. 25 units. I hope that you'd understand

7 0

3 years ago