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P1 Revision topic - 1:15pm 9th June - Edexcel

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Reply 100
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chats
2
mik1a
Sorry, didn't read this part.

Bascally, you are given two variables (but not explicitly told). These can be likened to x and y. You are given enough constraints to write one in terms of the other. You may need to do some substituting.

Once you have them in the form:
eg.
y = x^2 + x + 1

And you have to "find the value of x for which y is minimum", differentiate and set equal to zero:

dy/dx = 2x + 1 = 0
2x = -1
x = -1/2

So this is the value when y is a minimum. Sorry I'm rushed, gtg, I'll explain in mroe detail later, or maybe someone else will beat me to it. These are typical applications of calculus questions.


thanks for your help. much appreciated. look foward to hearing from you later
Reply 101
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z!D4N
u guys dont need to work so hard for the P1 exam u konw
Reply 102
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chats
2
z!D4N
u guys dont need to work so hard for the P1 exam u konw


i do, i dont think i can get higher than 50 let along 65
Reply 103
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z!D4N
chats
i do, i dont think i can get higher than 50 let along 65

work harder then
Reply 104
Avatar for adk
adk
How many proofs do you have to learn off by heart, and which ones?
Reply 105
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adk
Have you gotta be able to prove, for example, that sin^2x + cos^2x = 1?
Reply 106
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z!D4N
adk
How many proofs do you have to learn off by heart, and which ones?

geometric +arthimetic
Reply 107
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z!D4N
adk
Have you gotta be able to prove, for example, that sin^2x + cos^2x = 1?

yes
the sin&cos identity is in the syllabus
Reply 108
Avatar for m:)ckel
m:)ckel
14
z!D4N
yes
the sin&cos identity is in the syllabus

it's in the syllabus, but you don't have to know how to prove it
Reply 109
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z!D4N
mockel
it's in the syllabus, but you don't have to know how to prove it


duh
Reply 110
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chats
2
z!D4N
work harder then


stop saying you dont have to workk hard then!
Reply 111
Avatar for m:)ckel
m:)ckel
14
z!D4N
duh

what are you talking about?


first:
adk
Have you gotta be able to prove, for example, that sin^2x + cos^2x = 1?


then you replied:
z!D4N
yes...


so i said you don't have to know how to prove it, and you come out with that???
Reply 112
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chats
2
he is just a moron, just caus he THINKS he knows it all and i bet he dont

edit: in fact i feel like giving out my 32 point bad rep *crack knuckles*
Reply 113
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adk
So, you've got to know how to prove:

Arithemtic - Sum, nth Term and first n natural numbers.

And Geometric - Sum, nth Term and sum to infinity.

That right? :wink:
Reply 114
Avatar for z!D4N
z!D4N
mockel
what are you talking about?


first:


then you replied:


so i said you don't have to know how to prove it, and you come out with that???


if u didnt understand, read again carefully. XD~~
Reply 115
Avatar for z!D4N
z!D4N
chats
he is just a moron, just caus he THINKS he knows it all and i bet he dont

edit: in fact i feel like giving out my 32 point bad rep *crack knuckles*


sure, im willing to receive it
Reply 116
Avatar for z!D4N
z!D4N
chats
he is just a moron, just caus he THINKS he knows it all and i bet he dont

edit: in fact i feel like giving out my 32 point bad rep *crack knuckles*


dude, give it now man
Reply 117
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chats
2
z!D4N
dude, give it now man


you will recieve when the time is right
Reply 118
Avatar for adk
adk
z!D4N
dude, give it now man

twat
Reply 119
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z!D4N
chats
you will recieve when the time is right


when? i dont believe u, coward.

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