Maths Problem :(
August 19th, 2013
I need ur help for my younger brother,
He got stuck in these two Questions of Inequalties,
Please Provide the full solution i`ll grateful to u.
Questions are as follows:
Q: If x in an integer such that 200<3x^3<400, find x.
Q: If x is a positive integer such that 350<7x^2<450, find x.
Thanks in Advance !
Alright, this is from what I remember, but i might be way off the mark here.
I’ll show you one, but the second one’s done in a similar fashion.
Our equation is:
Now, the value of ‘x’ can exist only as a range of values to satisfy the inequality equation.
To find the higher and lower limits of ‘x’, we have to equate them to the inequality limits.
The lower limit of ‘x’:
To find the upper limit of ‘x’:
If we were looking for an integer solution between the range of 4.054 and 5.108, the integer value of 5 can be considered as the value of ‘x’.
For the second question, you’ll have two ranges of solution, both positive and negative as the solution involves a square root. You’ll have to consider both ranges as the answer.
Hope this helps. Cheers, mate.