maths p32 answers

[sparten]

I did the same
ln(x+1)=2 ln(x-1)
ln(x+1)= ln[(x-1)^2]

(x+1)= (x-1)^2

but i was getting x as 7 or -6
not 2.3, what did i do wrong?

i guess u solved it wrong though u removed log correctly
u vl get a mar for this =P

 

[sarahkhan]

How many mark was it out of? the first ques?

 

[cuppycake]

How many mark was it out of? the first ques?

4 marks.

 

[ying27kia]

Q1. 2.30
Q2. 1.32 rad
Q3. 1-x+(1/2)x^2
Q4. 201 and 330 something
Q5. y=-ln((3/2)-(1/2)e^2x)
Q6. two stationary points ; max point
Q7. -1/2 + i 1/2
Q8. ---
Q9. y=x-1 ; pie/4(e^2-1)
Q10. distance =6

correct me if im wrong

 

[Ahmed Tariq]

The answer to the binomial question was 1-x+(1/2)x^2

 

[alphabravocharlie]

Q1. 2.30
Q2. 1.32 rad
Q3. 1-x+(1/2)x^2
Q4. 201 and 330 something
Q5. y=-ln((3/2)-(1/2)e^2x)
Q6. two stationary points ; max point
Q7. -1/2 + i 1/2
Q8. ---
Q9. y=x-1 ; pie/4(e^2-1)
Q10. distance =6

correct me if im wrong

uhm weren't there 3 stationary points in q 6, as in pie/2, pie/12 and 5pie/12?

 

[Gooners]

i guess u solved it wrong though u removed log correctly
u vl get a mar for this =P

Yar i think that u guyz have quoted the question wrongly as evn by solving the above equation, u get answer as 0 nd 3 so hence i belive that Q 1 above is wrongly quoted here!
And my answer to binomial expansion Q was
------ 1-x-(3/8)x^2
I cnfirmed it with guyx at the center yesterday and all people said k yahi tha! :/
Can nyone else cnfirm?

 

[smzimran]

uhm weren't there 3 stationary points in q 6, as in pie/2, pie/12 and 5pie/12?

No, there were two and the point was minimum point, according to what i solved.

I think due to range bcoz range was less not 360,
though i dont exactly remember!

 

[Gooners]

uhm weren't there 3 stationary points in q 6, as in pie/2, pie/12 and 5pie/12?

Yes 3 stationary points!!! pi/2 was fr cos inverse of 0

 

[Prisonbreak94]

Yes 3 stationary points!!! pi/2 was fr cos inverse of 0

Agreed, 3 stationary pts for me too, got same answers as that other fella posting the answers! I will solve the paper with my tutor in a few hours so I can write the answers here if you want afterwards guys!

 

[ying27kia]

0 < x < 1/2 pie
so only 2 stationary points

 

[Gooners]

Guyz please see the Q1 quoted above by someone! Is it right or is the question quoted wrongly?
Cux if u solve the above equation u dnt get a quadratic equation and answer comes as 3 or 0 so hence
I think that it is wrongly quoted! Please see fr once!

 

[sparten]

Yar i think that u guyz have quoted the question wrongly as evn by solving the above equation, u get answer as 0 nd 3 so hence i belive that Q 1 above is wrongly quoted here!
And my answer to binomial expansion Q was
------ 1-x-(3/8)x^2
I cnfirmed it with guyx at the center yesterday and all people said k yahi tha! :/
Can nyone else cnfirm?

yes i got the same answer as far as i rember!

 

[sparten]

yes i got the same answer as far as i rember!

and wat was your volume?

 

[Prisonbreak94]

0 < x < 1/2 pie
so only 2 stationary points

I have the exam paper infront of me right now, it says 0 < x < pi

 

[sparten]

Yes 3 stationary points!!! pi/2 was fr cos inverse of 0

there were two stationary points.

 

[sparten]

I have the exam paper infront of me right now, it says 0 < x < pi

quote the bionomial question

 

[sparten]

Agreed, 3 stationary pts for me too, got same answers as that other fella posting the answers! I will solve the paper with my tutor in a few hours so I can write the answers here if you want afterwards guys!

yes plz post them as soon as ur tutor solves it!

 

[Prisonbreak94]

quote the bionomial question

Expand sqrt 1-x / 1+x in ascending powers of x up to and including term in x^2

 

[Prisonbreak94]

yes plz post them as soon as ur tutor solves it!

will do, no worries!