Mathematics: Post your doubts here!

[destined007]

Re: Maths help available here!!! Stuck somewhere?? Ask here!

for second part just equate y=0 and solve.

 

[Scafalon40]

Re: Maths help available here!!! Stuck somewhere?? Ask here!

got a trickier one here:
If f(x)=x-3, what is the function g which makes g[f(x)]=x^2-6x+10

 

[destined007]

Re: Maths help available here!!! Stuck somewhere?? Ask here!

got a trickier one here:
If f(x)=x-3, what is the function g which makes g[f(x)]=x^2-6x+10

x^2-6x+10
x^2-6x+(6/2)^2-(6/2)^2+10
(x-3)^2 -9+10
(x-3)^2 + 1 where x-3=f(x)
x^2 +1

 

[Scafalon40]

Re: Maths help available here!!! Stuck somewhere?? Ask here!

and that is correct...
thanks

 

[memyself15]

Re: Maths help available here!!! Stuck somewhere?? Ask here!

hey, if you need to solve any worksheet visit www. kutasoftware.com

 

[bamteck]

Re: Maths help available here!!! Stuck somewhere?? Ask here!

Please Help Me =(

Find the set of values of x satisfying the inequality | 3^x - 8 | < 0.5 , giving 3 significant figures in your answer.

 

[Scafalon40]

Re: Maths help available here!!! Stuck somewhere?? Ask here!

express the following in terms of the functions g(x)=x+2 and h(x)=3x
1)x=3x+2
2)x=9x
3)x=x+4
4)x=3x+12
6)x=3x+6

 

[whimsical]

Re: Maths help available here!!! Stuck somewhere?? Ask here!

Can someone help me to solve these questions from may/june 2007 03?

Q5ii
q6
and Q8ii

Many thanks in advance

 

[lewis_neu]

Re: Maths help available here!!! Stuck somewhere?? Ask here!

Hey frens can u plz help me out with this question...
1) The function f is defined by f : x  → 2x2 − 12x + 13 for 0 ≤ x ≤ A, where A is a constant.

ii)State the value of A for which the graph of y = f(x) has a line of symmetry.

Can u help explain the solution for it.. one of my fren said to compare it with ax2 + bx + c and -2(b) gives the solution bt i couldnt understand how does it gives solution..

 

[Scafalon40]

Re: Maths help available here!!! Stuck somewhere?? Ask here!

use -b/2a to find the max or min value of x
use that to find the value of A
eg if x=5, then A is 10(line of symmetry will occur at x=-b/2a, that will be the mid value of 0<x<A)

 

[VelaneDeBeaute]

Re: Maths help available here!!! Stuck somewhere?? Ask here!

AoA
So i wanted to ask what if the range for finding theta is like -360 < theta < 360 !! its really confusing !! This concept is troubling me ever since i started Trigonometry !!

 

[IgoforA]

Re: Maths help available here!!! Stuck somewhere?? Ask here!

help me with part 1.. P6

 

[IgoforA]

Re: Maths help available here!!! Stuck somewhere?? Ask here!

4 part !! need help.. tq

 

[hassam]

Re: Maths help available here!!! Stuck somewhere?? Ask here!

@ ghalya chek out these vids and those in suggested vids relating to this http://www.youtube.com/watch?v=ijIw4dFN89w

 

[TSZ]

Re: Maths help available here!!! Stuck somewhere?? Ask here!

Hey guys, i have a question from P1 quadratics.....the question is
Find, correct to 3 significant figures, all the roots of the equation 8x^4-8x^2+1=1/2 3^1/2
i didin't knw hw to write under root 3 so i wrote it dat way......thnx in advance

 

[Scafalon40]

Re: Maths help available here!!! Stuck somewhere?? Ask here!

please guys, answer my question

 

[Newbie]

Re: Maths help available here!!! Stuck somewhere?? Ask here!

http://adf.ly/k621

This is probably the best maths site ever . I have taken great benefit of this site .This site makes us understand every math topic in an easy way .

 

[destined007]

Re: Maths help available here!!! Stuck somewhere?? Ask here!

Please Help Me =(

Find the set of values of x satisfying the inequality | 3^x - 8 | < 0.5 , giving 3 significant figures in your answer.

 

[destined007]

Re: Maths help available here!!! Stuck somewhere?? Ask here!

express the following in terms of the functions g(x)=x+2 and h(x)=3x
1)x=3x+2
2)x=9x
3)x=x+4
4)x=3x+12
6)x=3x+6

 

[destined007]

Re: Maths help available here!!! Stuck somewhere?? Ask here!

AoA
So i wanted to ask what if the range for finding theta is like -360 < theta < 360 !! its really confusing !! This concept is troubling me ever since i started Trigonometry !!

Hassam's video is quite enough for the concept.