• We need your support!

    We are currently struggling to cover the operational costs of Xtremepapers, as a result we might have to shut this website down. Please donate if we have helped you and help make a difference in other students' lives!
    Click here to Donate Now (View Announcement)

Mathematics: Post your doubts here!

Messages
4,493
Reaction score
15,418
Points
523
a2 math

View attachment 18957


please can someone help

* break e^( 2x+y) into e^2x multiplied by e^y or (e^2x)(e^y)

* take y onto the side of dy and place x onto other side of equation where dx is

Dy (1 / e^y) = dx (e^2x)

* integrate both sides placing a c on the x hand side.
it will give you
Dy (e^-y) -------> -e^ -y
Dx (e^ 2x) ---------> 2e^2x

Thus -e^ -y = 2e^2x +c

* now place values of x n y to take out value of c wch wud b -1.5

* place the value of c into formula = last line of 3rd * above
 
Messages
637
Reaction score
365
Points
73
Find the value of the term which is independent of x in the expansion of (x+3/x)^4

And people, does anyone have good notes on math ? Radians, binomial theorm and all, my teacher is the worst teacher and i need some help :( ! Thankyou <3
 
Messages
4,493
Reaction score
15,418
Points
523
Find the value of the term which is independent of x in the expansion of (x+3/x)^4

And people, does anyone have good notes on math ? Radians, binomial theorm and all, my teacher is the worst teacher and i need some help :( ! Thankyou <3

4c2( x^2) ((3/x) ^2)
54
 
Messages
4,493
Reaction score
15,418
Points
523
please solve this and explain find the equation of two lines through the origin which are inclined at 45 degree to the line 2y+x=0 please tell me frome where this question is?
did u get the solution? or do wan me to do it for u?
 
Messages
958
Reaction score
3,499
Points
253
Aoa wr wb
Can someone please help me with part iii) of this qn?

please provide detailed step-by-step explanation, i didn't understand the ms here:/


Screen shot 2012-12-02 at 4.38.57 PM.png


whitecorp and everyone else. thanx a million.
 
Messages
33
Reaction score
7
Points
18
Hey guys, I'm having some trouble with this A2 statistics question. I can't quite figure it out, please help :{

The heights of a population of male students are distributed normally with mean 178cm and standard deviation 5cm. The heights of a population of female students are distributed normally with mean 168cm and standard deviation 4cm. Find the probability that a randomly chosen female is taller than a randomly chosen male.
 
Top