You are Here: Home >< Maths

# C3 function question watch

1. My question

But for the part about f(x) = k
My working was:

Please can you tell me if my method is right way to show that f(x) = k

b)

Please show me a better way, I try to use my result to show that f(x) =k/x but i dont think i am right. Also how to i show that f(x) = kx

c)i did part c

thank you
2. (Original post by bigmansouf)
My question

But for the part about f(x) = k
My working was:

Please can you tell me if my method is right way to show that f(x) = k

b)

Please show me a better way, I try to use my result to show that f(x) =k/x but i dont think i am right. Also how to i show that f(x) = kx

c)i did part c

thank you
For the first part you have . You know that . Using this you should be able to take out a factor on top and bottom containing an expression in x.
3. (Original post by B_9710)
For the first part you have . You know that . Using this you should be able to take out a factor on top and bottom containing an expression in x.
for part a (ii) f(x0 = k I did what you recommended whereby I found b/d. the Problem is that b/d is not a constant to my understanding sine b/d can be any number doesn't that make it a variable
4. (Original post by bigmansouf)
for part a (ii) f(x0 = k I did what you recommended whereby I found b/d. the Problem is that b/d is not a constant to my understanding sine b/d can be any number doesn't that make it a variable
Everything is constant except the variable .
5. (Original post by B_9710)
Everything is constant except the variable .
Thank you

TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Updated: August 19, 2016
Today on TSR

### The most controversial member on TSR?

Who do you think it is...

### Is confrontation required?

Discussions on TSR

• Latest
Poll
Useful resources

### Maths Forum posting guidelines

Not sure where to post? Read the updated guidelines here

### How to use LaTex

Writing equations the easy way

### Study habits of A* students

Top tips from students who have already aced their exams

## Groups associated with this forum:

View associated groups
Discussions on TSR

• Latest

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE