Cssa mx1 (2 Viewers)

[Some Vunt]

i got 33 seconds i think and 4000+metres

that was 7a) im talking about 7b) the tan one.

fuck!

 

[Some Vunt]

Someone post it here when you have the paper or solutions. I want to look at this bitch again. May as well, I have nothing better to do on the weekend. Lol

 

[muzeikchun852]

yeah i think you confirmed it. stupid calculator.

 

[Dylanamali]

In the graphing question - why does the graph only have 1 x-intercept?

 

[Drongoski]

just substitute back to the original equation : i tried wolfram and i got this -7.105427357601×10^-15 but alternative form is 0. maybe it is a root.

Hermes1 already posted substitution. You have still not shown your substitution leading to nonzero. Either you made an error maybe because you used a wrong polynomial or you have problems with your algebra - in which case you need to address.

Edit

don't blame stupid calculator!

 

[HyperComplexxx]

the graph is increasing, so at x = -1.2, y = 0
that means that for x > -1.2, y > 0 and if x < -1.2, y < 0
therefore it will never hit x axis again so 1 x -int

 

[Hermes1]

where can i find this paper?

 

[Some Vunt]

In the graphing question - why does the graph only have 1 x-intercept?

lol'd. I wrote "because it only crosses the x-axis once" I had no idea. Lol

 

[Hermes1]

lol'd. I wrote "because it only crosses the x-axis once" I had no idea. Lol

LOOOOOOOOOOOOL. thats classic. hope u get the mark.

 

[Dylanamali]

the graph is increasing, so at x = -1.2, y = 0
that means that for x > -1.2, y > 0 and if x < -1.2, y < 0
therefore it will never hit x axis again so 1 x -int

sweet did that aswell except showed it with derivatives.. is that the correct approach?

 

[muzeikchun852]

Hermes1 already posted substitution. You have still not shown your substitution leading to nonzero. Either you made an error maybe because you used a wrong polynomial or you have problems with your algebra - in which case you need to address.

Edit

don't blame stupid calculator!

i didnt think about substitution because it will be too much working. so i tried perfect square and all those methods that i know, and putted into my stupid calculator, they all gave me this stupid small number, and these stupid small numbers make me stupidly stress.

but i'm okay now

 

[Some Vunt]

LOOOOOOOOOOOOL. thats classic. hope u get the mark.

I won't. My teacher is very mean about giving marks. She doesn't like to give them away.
Even though it's right!

 

[HyperComplexxx]

FUUUUARK
The more i tihnk about the exam, the more i think i got wrong

 

[Drongoski]

can you list the sequence of inputs into yr calculator? step by step without ommision. we'll see where you boo bood.

 

[Hermes1]

FUUUUARK
The more i tihnk about the exam, the more i think i got wrong

did u hav enuff time to go over the exam. did u manage to finish early?

 

[muzeikchun852]

i said there was no maximum or minimum point, hence only one inflexion point at x=0 therefore it only hits it the x-intercept once.

 

[muzeikchun852]

can you list the sequence of inputs into yr calculator? step by step without ommision. we'll see where you boo bood.

(2+root3)^3 - 15 (2+root3) + 4

btw, it's a sharp calculator.

 

[Hermes1]

(2+root3)^3 - 15 (2+root3) + 4

btw, it's a sharp calculator.

the only way u could have got it wrong wuld be if u entered one of the signs wrong. did u at least leave the answers on the page?

 

[HyperComplexxx]

did u hav enuff time to go over the exam. did u manage to finish early?

i finished with 30min to spare but still not feeling confident D:

 

[michaeljennings]

(2+root3)^3 - 15 (2+root3) + 4

btw, it's a sharp calculator.

lol this is equal to zero..