C1 1 mark question! :(

Original post by dongonaeatu

minimum point- the gradient is positive is this right

Just curious, have you done C1?

Reply 21

jameslad

Original post by raheem94

By mistake wrote tangent, i have corrected it.

Sorry for the confusion it caused.

I see.. so the equation of a normal when referring to completing the square

it's always the x value of the minimum point?

What if this question ask for tangent instead of normal?

Reply 22

Original post by hassi94

No. How do we find minimum points using calculus?

d2y/dx2 and if its less than 0 it is a maximum if it is more than 0 it is a minimum

Reply 23

Original post by dongonaeatu

minimum point- the gradient is positive is this right

The second derivative is positive not the gradient, gradient is zero.

Reply 24

Original post by 4mar_ar5en4l

Just curious, have you done C1?

yes, why

Reply 25

Original post by raheem94

The second derivative is positive not the gradient, gradient is zero.

ah **** it i've done like 4 hours revision tonight maths and biology i'm going to bed my mind cant take it anymore. Night

Reply 26

Original post by jameslad

I see.. so the equation of a normal when referring to completing the square

it's always the x value of the minimum point?

What if this question ask for tangent instead of normal?

Equation of tangent would be,

y = - \dfrac{25}8

When you find the equation of normal at the stationary point than it will be the 'x' value of the stationary point.

Reply 27

Original post by dongonaeatu

yes, why

Erm no real reason. You must have C2 coming up soon, good luck.

Reply 28

Original post by dongonaeatu

ah **** it i've done like 4 hours revision tonight maths and biology i'm going to bed my mind cant take it anymore. Night

I again say you please don't answer questions on the maths forum.

You always make it wrong, this causes confusion, so better leave it for more experienced mathematicians to try.

Reply 29

Original post by 4mar_ar5en4l

Erm no real reason. You must have C2 coming up soon, good luck.

thank you. I'm looking for an A in c2. i got a C in c1. inshallah i can get an A

Reply 30

Original post by raheem94

I again say you please don't answer questions on the maths forum.

You always make it wrong, this causes confusion, so better leave it for more experienced mathematicians to try.

sorry raheem. It was a weird question anyway

Reply 31

Original post by raheem94

I again say you please don't answer questions on the maths forum.

You always make it wrong, this causes confusion, so better leave it for more experienced mathematicians to try.

I think I should stay away from answering on the maths forum as well; My explanations are by no means the clearest.

I thought you were offline, so I tried seizing the opportunity :wink:

Original post by dongonaeatu

thank you. I'm looking for an A in c2. i got a C in c1. inshallah i can get an A

(edited 11 years ago)

Reply 32

Original post by 4mar_ar5en4l

I think I should stay away from answering on the maths forum as well; My explanations are by no means the clearest.

I thought you were offline, so I tried seizing the opportunity :wink:

why are you rolling your eyes at that

Reply 33

Original post by dongonaeatu

sorry raheem. It was a weird question anyway

Original post by 4mar_ar5en4l

I think I should stay away from answering on the maths forum as well; My explanations are by no means the clearest.

I thought you were offline, so I tried seizing the opportunity :wink:

I didn't wanted to discourage answering questions, but i think only the experienced mathematicians should do it, otherwise it will become a trend of everyone trying to answer questions, even the ones who are themselves not clear with the topic, this will cause a lot of confusion.

I didn't felt the question was weird.

Reply 34

Original post by dongonaeatu

why are you rolling your eyes at that

Just.

Reply 35

Original post by 4mar_ar5en4l

Just.

You dont think i will get an A? I will prove you wrong.

Reply 36