Mathematics: Post your doubts here!

[D0cEngi]

Integrate with respect to x:
q1. (4-x) / (x-2) (x-3)
q2. 1 / (x^2 -4)

Plz reply as soon as possible.

 

[ZohaibAsad]

does anyone have any ideas whether cie is easier than edexcel in Maths?

Edexcel is a lot easier for maths, you don't even need to repeat all papers if you mess up on 1, you only repeat the exam that you messed up.

 

[ZohaibAsad]

Integrate with respect to x:
q1. (4-x) / (x-2) (x-3)
q2. 1 / (x^2 -4)

Plz reply as soon as possible.

Expand and take the denominators to the numerators by inverting them. Then use standard integration to the power x formula

 

[nafis shahRiyar]

i was wondering if you guys could give me a link where i can find all the P1 and S1 formulas together.....

 

[Talhakhan]

Need notes for P1 plz. ASAP...

 

[VelaneDeBeaute]

Need notes for P1 plz. ASAP...

These had been posted on the forum before, I just had them downloaded!

 

[Talhakhan]

Which are Good teachers for maths tution in islamabad.

 

[falcon678]

guys can any one explain how to calculate the range for a function.........i stil dun knw how to calculate it...!

 

[whitecorp]

guys can any one explain how to calculate the range for a function.........i stil dun knw how to calculate it...!

You can sketch out the graph related to the function, and look at the set of x values specified for observation in the problem (ie the domain of the function).
In this window of observation, locate the maximum and minimum y-values-these would give you the range of the function.

Hope this helps. Peace.

 

[Silver Wing]

guys can any one explain how to calculate the range for a function.........i stil dun knw how to calculate it...!

1) calculate the first derevative of the function
2) equate it to zero
3) find the X- value and this the the x-coordinate of the maximum or the minimum of the range
4) find the second derevative of the function and substitute the x value if needed, if its -ve, y is at max for value of x found in step 3 and if +ve value of y is at minimum.
5) substitute your x value in the original function to find Y value needed
6) if step 4 was +ve then Y grater than or equal to value found in step 5, and if step four was -ve, then Y is smaller than or equal to value of step 5.

Hope it helps.

 

[sma786]

My math book is suffocating me
Somebody here to clear doubts ? =\

 

[sma786]

So here's this question in quadratics ..
solve the quadratic equation leaving in surds form ..
i know we have to solve with the abc formula .. but this equation does not fit in .. help please :\
---> 2(x+3)^2 = 5

 

[iKhaled]

So here's this question in quadratics ..
solve the quadratic equation leaving in surds form ..
i know we have to solve with the abc formula .. but this equation does not fit in .. help please :\
---> 2(x+3)^2 = 5

they already said leave the answer in surds..so when u do the equation x= -b ±√(b^2-4ac) / 2a u will end up with x =1/4 (-20 + √40) or 1/4(-20-√40) u can simplify it..did u get it now ?

 

[smzimran]

So here's this question in quadratics ..
solve the quadratic equation leaving in surds form ..
i know we have to solve with the abc formula .. but this equation does not fit in .. help please :\
---> 2(x+3)^2 = 5

I have rationalized the denominator, it is although not necessary!

 

[falcon678]

1) calculate the first derevative of the function
2) equate it to zero
3) find the X- value and this the the x-coordinate of the maximum or the minimum of the range
4) find the second derevative of the function and substitute the x value if needed, if its -ve, y is at max for value of x found in step 3 and if +ve value of y is at minimum.
5) substitute your x value in the original function to find Y value needed
6) if step 4 was +ve then Y grater than or equal to value found in step 5, and if step four was -ve, then Y is smaller than or equal to value of step 5.

Hope it helps.

dude tht is for stationary point of a curve.... no?

 

[sma786]

they already said leave the answer in surds..so when u do the equation x= -b ±√(b^2-4ac) / 2a u will end up with x =1/4 (-20 + √40) or 1/4(-20-√40) u can simplify it..did u get it now ?

I have rationalized the denominator, it is although not necessary!

thanks both got the answerr..

 

[SHAHBAZ NAZIR]

plz tell me the names of books for alevel maths .p1,p3,m1,s1

 

[Silver Wing]

dude tht is for stationary point of a curve.... no?

Thats right, but the stationary point in a Quadratic curve gives you either max or min point on it and this is where our range starts.
Hope I have helped you.

 

[TERMINATOR]

Salaaaam. Can you please help me differentiate this?

 

[falcon678]

Thats right, but the stationary point in a Quadratic curve gives you either max or min point on it and this is where our range starts.
Hope I have helped you.

ooh i see.... got it...
thanks...!