9709/13/M/J/23 | Solved | May June 2023 Paper 13 | CIE A Level Maths 9709

In this video I solve the 9709/13/M/J/23, May June 2023, Question Paper 13 for the CIE A Level Maths 9709 exam board.
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• 9709/13/M/J/23 | Solve...
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[@machacooling]

Nice

[@machacooling]

4:12 can you plz also tell me all the other rules for the discriminants, like when is the distcriminant equal to zero when is it greater than zero!?🙏🙏

[@GCEALevelMaths9709]

b^2 - 4ac > 0 means there are two real roots, and there are two points of intersection.
b^2 - 4ac = 0 means there is one real root (sometimes called a repeated root), and there is only one point of intersection.
b^2 - 4ac < 0 means there are no real roots and we have no points of intersection.
P.S You can find all this theory in my revision notes on my website: gcealevelmaths9709.com

[@machacooling]

Thanks a lot. ur the best. I hope this channel get the attention it deserves..tysm for working so hard for us❤❤

[@GCEALevelMaths9709]

@@machacooling Thank you! And it's a pleasure helping you all!

[@machacooling]

4:05 how do we know there are no points of intersection!?

[@GCEALevelMaths9709]

We are told that f(x) > 2. So that minimums that f(x) is above the line y = 2. Meaning that f(x) will always be above the x-axis (y = 0). This means that f(x) will never intersect the x-axis, and so there are no points of intersection.

[@machacooling]

OK, I got it. Thank you so much, and I'm sorry for asking such dumb questions. I'm just so stressed

[@GCEALevelMaths9709]

@@machacooling no it's not a dumb question. I know what exam stress is like, so I totally understand. I wish you the best in your exams.

[@machacooling]

Thanks a lot!

[@GCEALevelMaths9709]

@@machacooling You're Welcome!