C3 may2012 preparation.

[Shoggaine]

I knw its like weeks away nd i did not see any threads abt c3 so i wanted 2 make 1. If u hav any doubts or questions can post it here

 

[donn]

can someone tell me about how to draw the c3 graphs

 

[z3r0thunder]

Any specific examples you want?

1. Straight Lines
2. Curves from x^2
3. Curves and Inflexion Points from x^3
4. Transformations:

• f(x+a) => Subtract a from all X-Values
• f(x-a) => Add a to all X-Values
• f(x/a) => Multiply all X-Values by a
• f(ax) => Divide all X-Values by a
• a+f(x) => Add a to all Y-Values
• f(x)-a => Subtract a from all Y-Values
• af(x) => Multiply all Y-Values by Y
• f(x)/a => Divide all Y-Values by a

 

[Shoggaine]

U want to know the exponential or the functional graphs?

 

[donn]

Actually wanted to know how to draw inverse graphs and arcs of the same graphs for eg sine inverse and arc sine( is there any difference?)

Thanks in advance

 

[z3r0thunder]

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[Shoggaine]

Can anyone plz tell me how to find out range nd domain. I am a bit confused =S

 

[étudiante]

 

[Shoggaine]

Ohhh irum!
Thank you very much <3

 

[étudiante]

Ohhh irum!
Thank you very much <3

Y so formal miss?
My duty

 

[xIshtar]

How's everyone feeling about the exam?

 

[moonlight856]

Hi every1
Basically I`m stuck with question 1 on jan 2012

 

[Shoggaine]

Hi every1
Basically I`m stuck with question 1 on jan 2012

U use the product rule for part a nd quotient rule for part b. Dis rule is given in the booklet.
If u still cudn't do it den i will do it nd show u

 

[moonlight856]

Thanks alot !
I got it
but how do I know if i have 2 use the product rule or quotient rule ?

 

[xIshtar]

Thanks alot !
I got it
but how do I know if i have 2 use the product rule or quotient rule ?

Quotient is when there is a fraction, where there is factors of x at the top and bottom. If there is no x at the top, you can just use chain rule

 

[Youssef Ali Mohammed]

Guys i need help, How to draw this curve : 1+ (2/x+1) State its range and domain???

 

[OmarUTD5]

how many marks do i need to get a * in C3 and C4

 

[Youssef Ali Mohammed]

how many marks do i need to get a * in C3 and C4

90% in both paers, according to last years thresholds 70/75

 

[Youssef Ali Mohammed]

Please guys answer my question QQ

 

[xIshtar]

Guys i need help, How to draw this curve : 1+ (2/x+1) State its range and domain???

Okay, so f(x) = 1 + (2/x+1)

The +1 is a vertical translation, and you already know the shape of the curve 1/x, in that regard, (x+1) is a horizontal translation of -1. And the factor 2, is a stretch.

As for the range, 2/(x+1) will never be zero, so think about where the curve tends to as x tends to positive and negative infinity.
The domain, X belongs to the reals, but can't be equal to -1.

The easiest way to determine these is to look at the graph