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question about edexcel c2.

for example, if you had a question where you have to find the co-ordinates of a point (e.g stationary point), use calculus and use the quadratic formula (because i'm lazy when it comes to factoring, only when a question doesn't ask you to factorise) do you get all the marks? like on the markscheme, it doesn't show anything about using the quadratic formula even though i got the right answers.
Reply 1
Avatar for joostan
joostan
13
Original post by CoolRunner
for example, if you had a question where you have to find the co-ordinates of a point (e.g stationary point), use calculus and use the quadratic formula (because i'm lazy when it comes to factoring, only when a question doesn't ask you to factorise) do you get all the marks? like on the markscheme, it doesn't show anything about using the quadratic formula even though i got the right answers.


Correct solutions I believe attain the marks, regardless of the method (provided there is one) :smile:
Reply 2
Avatar for TenOfThem
TenOfThem
18
Original post by CoolRunner
for example, if you had a question where you have to find the co-ordinates of a point (e.g stationary point), use calculus and use the quadratic formula (because i'm lazy when it comes to factoring, only when a question doesn't ask you to factorise) do you get all the marks? like on the markscheme, it doesn't show anything about using the quadratic formula even though i got the right answers.


Are you asking

"Can I use the quadratic formula instead of factorising"

If so, yes
Reply 3
Avatar for CoolRunner
CoolRunner
OP
9
Original post by TenOfThem
Are you asking

"Can I use the quadratic formula instead of factorising"

If so, yes


Original post by joostan
Correct solutions I believe attain the marks, regardless of the method (provided there is one) :smile:


Thanks!
Can you give an example of where you have used the quadratic formula to find a stationary point?
Ugh. C2 -.-

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