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# C1 - Maths

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Why bother with a post grad? Are they even worth it? Have your say! 26-10-2016
1. Are equal roots also real roots?
Are equal roots also real roots?
Depends. Given this is C1 and you're working in the reals, then yes.
3. Equal roots = one real root.
4. For the purposes of C1, yes. It's not true generally though.
5. If it is said, find the real roots, do we equate the expression to greater than 0 or greater than or equal to zero?
6. Hey! Is this for OCR MEI?
If it is said, find the real roots, do we equate the expression to greater than 0 or greater than or equal to zero?
The equation is equated to 0. The discriminant is set to greater than or equal to 0.
8. Just maths in general, so probably.
9. so ≥0?
so ≥0?
discriminant .
11. The discriminant only shows you the number of real roots- greater than 0 means 2 real roots, less than 0 means no real roots ( no interesection with x axis) and equal to 0 means there is only one real root.

To find the value of the roots you have to factorise/ complete the square/ use the quadratic formula and solve.
12. Anyone have a link to some of the hardest or weirdest questions o fC1
13. (Original post by greg.h.nm)
Anyone have a link to some of the hardest or weirdest questions o fC1
Try Solomon Papers for C1
14. I have my C1 exam tomorrow. Any tips!!!
15. (Original post by Psraim)
Equal roots = one real root.
By using discrimenent:
b2 - 4ac=0 only 1 root (answer for ur Q)
b2 - 4ac>0 2 roots
b2 - 4ac<0 no roots, so can't be solved.

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