Tuesday, January 21, 2014

Integration, Definite Integrals - IB Mathematics IB maths SL

Integration, Definite Integrals - IB Mathematics IB maths SL

How can we find the real number a>1 for which the following definite integral equals to 4?




The answer is here

http://www.ibmaths4u.com/viewtopic.php?f=11&t=426

IB maths from www.ibmaths4u.com

Thursday, December 26, 2013

IB maths - Logarithmic equations

Logarithmic equations
How can we solve the following logarithmic equation:



The answer is here
http://www.ibmaths4u.com/viewtopic.php?f=3&t=411

IB mathematics HL - Binomial Theorem

IB mathematics HL - Binomial Theorem

How can we find the coefficient of of the expansion of ?

The answer is here

IB mathematics Higher Level - Mathematical Induction

IB mathematics Higher Level - Mathematical Induction

How can we prove by induction that is divisible by for every natural number with ?

The answer is here

IB Maths HL - Mathematical Induction Series

IB Maths HL - Mathematical Induction Series

How can we prove by induction that for every natural number with ?

The answer is here

IB maths HL - Mathematical Induction inequality

IB maths HL - Mathematical Induction inequality

How can we prove by induction that for every natural number with ?

The answer is here

Tuesday, November 12, 2013

Graph of the Reciprocal of a Function

Reciprocal of a Function

The following guidelines are useful in order to sketch the reciprocal of a function given the graph of the original function:


Where is positive or negative then is also positive or negative respectively.

Where has zero(s) then the reciprocal function has vertical asymptote(s) and vice versa.

Where has a horizontal asymptote at y=c then the reciprocal function has also horizontal asymptote at .

Where the original function is increasing then the reciprocal function is decreasing.

Where the original function is decreasing then the reciprocal function is increasing.

If the original function has a maximum at then the reciprocal function has a minimum at .

If the original function has a minimum at then the reciprocal function has a maximum at .

If the original function has a point of inflexion at then the reciprocal function has also a point of inflexion at .