Turn on thread page Beta
 You are Here: Home >< Maths

# C3 Numerical Expressions? watch

1. f(x)=5x-4sinx-2 where x is in radians.
a. Evaluate to 2 significant figures, f(1.1) and f(1.15)
I don't get this question.
When I substitute it I get different answers.
2. (Original post by Sizzo1128)
f(x)=5x-4sinx-2 where x is in radians.
a. Evaluate to 2 significant figures, f(1.1) and f(1.15)
I don't get this question.
When I substitute it I get different answers.
Why did you expect to get the same answer? Can you please post the whole question?
3. (Original post by Sizzo1128)
f(x)=5x-4sinx-2 where x is in radians.
a. Evaluate to 2 significant figures, f(1.1) and f(1.15)
I don't get this question.
When I substitute it I get different answers to the mark scheme.
I've attached the photo
4. (Original post by Notnek)
Why did you expect to get the same answer? Can you please post the whole question?
I've just attached the photo.
Sorry, my question was vague. I meant I had different answers to what it should be which are -0.065 and 0,099
5. (Original post by Sizzo1128)
I've attached the photo
What did you get and what does the mark scheme say?

Are you in radians mode on your calculator?
6. (Original post by Notnek)
What did you get and what does the mark scheme say?

Are you in radians mode on your calculator?
That's it.
I changed my calculator mode to radians and it's giving me the answer now.
THANK YOU VERY MUCH

Reply
Submit reply
Turn on thread page Beta

### Related university courses

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: February 13, 2018
The home of Results and Clearing

### 2,313

people online now

### 1,567,000

students helped last year
Today on TSR

### Results day not go to plan?

Get advice and answers to your Qs here

### University open days

1. Keele University
General Open Day Undergraduate
Sun, 19 Aug '18
2. University of Melbourne
Open Day Undergraduate
Sun, 19 Aug '18
3. Sheffield Hallam University
City Campus Undergraduate
Tue, 21 Aug '18
Poll
Useful resources

## Make your revision easier

### 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

Can you help? Study help unanswered threads

## Groups associated with this forum:

View associated groups

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

Write a reply...
Reply
Hide
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.