Steps of this proof?????

If c is not equal to 0 and cx=1 then x=1/c

1) c is not = to 0 and cx=1

2) 1/c is a real number

3)1/c(cx) = 1/c x 1

4) (1/c x c)x = 1/c x 1

5) 1x = 1/c x 1

6) therefore/triangle made up of 3 dots x = 1/c

Could you give me the reasons for the 6 steps?

I think the first is given

Top 2 Answers

A few days ago

Anonymous

Favorite Answer

I’m not sure why you need six steps. To go from “cx=1” to “x=1/c”, you just have to divide both sides of the equation by ‘c’. This must be ok, because you are told that ‘c <> 0′.

The six steps are just a roundabout way of doing the same thing.

2. We know that c <> 0, therefore 1/c is a real number (it wouldn’t be, if c = 0).

3. Multiple both sides of the equation by (1/c).

(allowed because if B = C, AB = AC)

4. Group the constant terms on the LHS of the equation together. (allowed because A(BC) = (AB)C)

5. The ‘c’s on the LHS cancel out to leave 1. (allowed because c<>0 and C/C = 1)

6. Remove the extra ‘1 from the RHS (allowed because 1xA = A).

It all seems a bit pointless, really.

A few days ago

Anonymous

Ok, i have no idea what u r talking about. I am only in 7th grade.

i need to make a project on application of maths in any one particular field?

Graphs????

CAn you get these double homonyms?

Base 10 Base 2(HELP)?

What are some similarities and differences between Judaism and Islam?

i need help with chapter 6 the scarlet letter?

Probability?

How do you make 5 rows of 4 trees out of a total of 10 trees?

Steps of this proof?????

Steps of this proof?????

Related Posts