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**HL Maths Paper 2 before/after**
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Copper_pipe wrote: »You enter all your data as normal and press the AC button
The Line has the form y=bx +a
Then press SHIFT and 1
Then 7(reg) and get your a and b values
Sub any value for X into the y=bx+a to get your y coordinate.
Do this twice and join the points
That has actually changed my life! (I've a very sad life these days!
)
Though seemingly my b value is a and vice versa for the thing to make any sense!0 -
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kevin12345 wrote: »Enlargements? I can't think of anything else! Here's hoping for a nice trig question/75 marker statistics q!
Yeah but do i need all them trig identities stuff too? yes?
Yeah judging by friday, it will be a nice enough paper!
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shawnanana wrote: »I have that one too! What is it you're looking for?
Finding the line of best fit
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But guys, I mean, if they're asking you to draw the line by eye and get the equation from your line, would it not be a bit dodgy to have perfect co-ordinates even if your line isn't perfect? Because let's face it, most people won't get a perfect line. I think I'll just read mine from my own graph tbh.
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But guys, I mean, if they're asking you to draw the line by eye and get the equation from your line, would it not be a bit dodgy to have perfect co-ordinates even if your line isn't perfect? Because let's face it, most people won't get a perfect line. I think I'll just read mine from my own graph tbh.
I'm just doing it from my own graph too. you never know what the marks will be looking for tbh!0 -
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Prodigious wrote: »Finding the line of best fit
Best way to do it is get x bar, y bar (average of x' average of y) and then draw a line through that with roughly the same amount of co-ordinates on each side of the line0 -
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i'm terrified for this paper
What do I need to look over?
Bit late now, I'd say get an early night so you're on the ball tomorrow.
If you insist on it though, theorems are one thing you might struggle to have a crack at on the spot if you've not learnt them. Bernoulli's trials, hypothesis testing/correlation, trig graphs and tangents to a circle are probs likely enough.0 -
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Prodigious wrote: »Finding the line of best fit
Oh sorry I don't even know how to do that myself :P thought it was the correlation coefficient or standard deviation or something!0 -
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