solutions (2 Viewers)

[jpk]

can any1 write some of the solutions for the maths exam. Ill do question1.

Question 1

(a) 0.0302
(b) 3+sec(squared) x
(c) 94 degrees
(d) $280
(e) x(power 3)-8x+c
(f) x=10, -4

 

[Adam]

2.

a) i forget
b) i)root one
ii)1
iii) i forget
iv) c (10,0)
v) well, they give u the answer
vi) i forget answer, but A=1/2h(a+b)

Sorry, I'm not too helpful, maths killed my brain.

 

[Under-stated]

soory but i think Q1. c) is 95 degrees.

 

[Jaan]

Give the paper to your maths teacher and tell them to do, stuff doing it again!!

 

[Ragerunner]

Gradient is negative 1

 

[bails]

im prob wrong but just checkin,
2.
i) i got root 2
ii) -1
iii) 45*

like i said im prob wrong tho...

 

[Winston]

Originally posted by Under-stated
soory but i think Q1. c) is 95 degrees.

it's actually 96 degrees

5/3 multiplied 180/Pi

 

[bails]

Im confused coz i got something like 95*29'.34 does it go up or stay, i thought it would stay at 95*

 

[Jaan]

bails is right

 

[Adam]

Indeed, it rounds down to 95 degrees, bouncing head person your wrong!

 

[Winston]

Originally posted by bails
Im confused coz i got something like 95*29'.34 does it go up or stay, i thought it would stay at 95*

it says NEAREST

when they say nearest you go Fix 0 on ur calculator try it out

 

[bails]

Yeah but dont it go up when it hits 30 minuites?

 

[Jaan]

95 29 rounds down

 

[vennyra]

Originally posted by Winston
it says NEAREST

when they say nearest you go Fix 0 on ur calculator try it out

Well i do that on my calculator and the answer is 95 degrees [like i should talk, i left the bloody thing in radians - i should learn to read the damn question properly]

 

[Beaky]

umm Question 2
iii) tan 135 = 135 degrees (Cause -1 not 1)
vi) 30 + 15 root 2

 

[Winston]

Originally posted by Adam
Indeed, it rounds down to 95 degrees, bouncing head person your wrong!

ahh yes it is 95 i fink i accidently typed 96 but i put the right answer in the exam becoz i Fix 0'd the answer.

 

[kazerati]

um, yeh, but really, back to basics (something even i can do.. sometimes!) theres 60 minutes in a degree, and when rounding, anything <30'0" (inclusive) goes up and anything under that goes down.. which would make 95' 29'34.whatever" round down to 95' . at least, i really hope it does, coz i have a feeling im gonna need those 2 marks...

 

[jogloran]

For the fish question (I believe 9 c) ii)), the value to minimise E is v = 3u/2, I think.

 

[bails]

do u know what u got for 3. a. i) ii), d. i) ii)?

 

[Winston]

Originally posted by bails
do u know what u got for 3. a. i) ii), d. i) ii)?

3a)(i) 18e^x(2e^x-4)^8

(ii) (x^2)(cosx)+(2x)(sinx)

= x^2cosx+2xsinx

= x(xcosx+2sinx)


(d)(i) = ln(x^2+5) +C

(ii) = [tanx] Pi/3 - Pi/4

=(tan(Pi/3)) - (tan(Pi/4))

= root 3 - 1 Units squared