You are Here: Home >< Maths

# Help please (underestimates and over...) watch

1. I have two solutions... an overestimate and an underestimate.

I need to show where the solution lies to a certain number of decimal places. Please, if anyone can, help me to get the answer and explain how, possibly.

Upper bound (i think it is what this is called - the overestimate i have) is 14.99000533

and the lower (the underestimate) is
14.98962678.

So X lies between the two bounds, are they 14.989 < x < 14.990 ??

thanks to anyone who can help
2. If you take any number between 14.98962678 and 14.99000533 and round it to three decimal places, you get 14.990.

So although you don't know the exact solution, you know that it equals 14.990 to 3dp.

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: April 13, 2006
Today on TSR

### Congratulations to Harry and Meghan!

But did you bother to watch?

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