Mathematics: Post your doubts here!

[saadgujjar]

a girl lives 500 meter from school.she sets
out walking at 2 m/s but when she has
walked a distance of x meter her speed has
dropped to (2 - x/400 )m/s .how long does
she take to get to school?answer is 6.5
minute plz solve

plz solve

 

[alvi666]

solution for october november P-33 2011
please??

 

[mikail]

Post the paper and which question ...

 

[mikail]

a girl lives 500 meter from school.she sets
out walking at 2 m/s but when she has
walked a distance of x meter her speed has
dropped to (2 - x/400 )m/s .how long does
she take to get to school?answer is 6.5
minute plz solve


Which paper is this question from ?

 

[alvi666]

Post the paper and which question ...

Q4 and Q10

 

[mikail]

Que 4 is a differential Equation.
integrate 1/N^0.5 dN = integrate 1.2e^ -0.002t dt

U will get N in terms of T and a constant. To eliminate the constant, replace N = 100 when t =0.
U will get N in terms of T.

As t increase, find what is happening to N.
Replace t by a large value.

 

[ahmed abdulla]

U should use Moments

can u do it bro ?

 

[mikail]

can u do it bro ?

Which Question ?

 

[mikail]

can u do it bro ?

Which Question ?

 

[ahmed abdulla]

can u help me with M2 >> q4
http://papers.xtremepapers.com/CIE/...AS Level/Mathematics (9709)/9709_s08_qp_5.pdf​

 

[Khadija_1234]

[/quote

U need to square this quadratic equatiion: (x^2 -2x -3)

(x^2 - (2x+3) )^2 = x^2 - 2 (x)(2x+3) + (2x+3)^2


Now u can complete............

Thank you

 

[mikail]

i)

AC has weight 20 N. The weigh is at the middle.
BC has weight 25 N. The weight is at the middle.
Moment = force * perpendicular distance.

Taking moments at B

Clockwise moment = anti clock wise moment

5 * T = 2*20 + 2*25

Make T the subject of formula..

 

[Kdown567]

How do you do Q5 I) , can you explain , thanks



Answer is 6 btw

 

[Kdown567]

How do you do Q5 I) , can you explain , thanks



Answer is 6 btw

Never mind I got it

 

[Rutzaba]

guys how do we calculate the integral of root of 1+ cos^2 x

 

[Rutzaba]

guys how do we calculate the integral of root of 1+ cos^2 x

 

[SulmanAli]

Can someone please give my quick notes for P3 and P6 for A- Level Mathematics !

 

[Nourin]

hey .. can you please link me compiled formula of A LEVEL ?

 

[Nourin]

hey .. can you please link me compiled formula of A LEVEL ?

 

[Khadija_1234]

Can someone do this question please?