Friday, September 17, 2010

Integral of sine squared X

Integral of sine squared X:

1) Integrate the function f(x) = 4sin 3x.

2) Integrate the function f(x) = sin (3x + 11).

3) Integrate the function f(x) = sin 3x + 3x2

Solutions:

1) - cos 3x + C

2) - cos (3x + 11) + C

3) - cos 3x + + C


My next blog is on:

Graphing equations

Other helpful links:

How to calculate Ratios




Thursday, September 16, 2010

Functions

Increasing and decreasing functions:

Extreme values calculus is defined by Fermat's theorem, which states that they must occur at critical points.

If f(x) has an extremum on an open interval, then the extreme value occurs at a critical point of f(x).

If f(x) has an extremum on a closed interval, then the extreme value occurs either at a critical point or at an endpoint.

Critical points of f(x) are defined as the values of x* for which either f'(x*) = 0 or f’(x*) does not exist.

One can distinguish whether an extremum is a local maximum or local minimum by using the first derivative test or second derivative test.

To know more , my next blog on:

Meters to centimeters

Other helpful links

Algebra questions and answers


Wednesday, September 15, 2010

F x Maths

F x Maths

A ) V only
B ) I and II
C ) III only
D ) III and IV
E ) IV only

F x maths

Steps to derive

1 f(x) = sin 2x

2 f(- x) = sin 2(- x) = - sin 2x

3 f(- x) = - f(x)

4 f(x) is an odd function.
[If f(- x) = - f(x), then f(x) is an odd function.]

5 So, f(x) is symmetric about origin.

To know more:

Slope Formula

Sine formula

Wednesday, September 8, 2010

Graphing Equations

Graphing Equations:

Example issues for graphing equations help – linear equation:

Graph the linear equation y = 3x – 6
Solution:

To graph the linear equation they must find the x and y intercept of the linear equation. To find the x and y intercept they must plug the 0 for y and x.

From the above x intercept mean y = 0

So 0 = 3x – 6

3x = 6 and x = 2

So the x intercept point is (2, 0)

Now they must find the y – intercept so plug x = 0

y = 3 (0) – 6

y = -6


To know more:

Probability


Algebra graphing calculator

Tuesday, September 7, 2010

Free Fraction Help

Free fraction help:

1. In order to do fractions they first require to find the common factor of both the numerator and denominator (A common factor is any number that divides both the numerator and denominator). Like 3 divides 6 and 21.
2. Then continue dividing the fraction with the common factor till there's no more common factors in the numerator and denominator.
3. Now the fraction is called as simplified fraction as no common factors remaining which can divide both the numerator and denominator.

To know more:

Acute angle


Online square root calculator

Monday, September 6, 2010

Factors of 54

A ) 1, 2, 4, and 8
B ) 1, 2, 3, and 4
C ) 1, 2, and 4
D ) 1, 2, 4, 7, and 8


Steps to derive

1 56 = 1 × 56, 2 × 28, 4 × 14, 7 × 8
[Write the pairs of numbers with a product of 56.]
Factors of 64:

2 The factors of 56 are 1, 2, 4, 7, 8, 14, 28, and 56.

3 64 = 1 × 64, 2 × 32, 4 × 16, 8 × 8
[Write the pairs of numbers with a product of 64.]

4 The factors of 64 are 1, 2, 4, 8, 16, 32, and 64.

5 68 = 1 × 68, 2 × 34, 4 × 17
[Write the pairs of numbers with a product of 68.]

6 The factors of 68 are 1, 2, 4, 17, 34, and 68.

7 The common factors of 56, 64 and 68 are 1, 2, and 4.

To know more on:
Probability

Factors of 27

Thursday, September 2, 2010

Polygons

Polygon definition:

A blocked flat surface shape among n sides is named polygon. There's n number of polygons are introduced in math. Side, vertex, diagonal, Interior angle, exterior angle are the parts of the polygon. Here Side is one of the line partitions that prepared a polygon. Vertex is a point in which one faces are meeting. And over one those points are called vertices. Diagonal is a line which is used to joining one vertices and it is not a side. Interior angle is angle which is produced by the one adjoining faces within the polygon. Exterior angle is a angle which is produced by one adjoining faces exterior the polygon.
Different Types of Polygons:
The given polygons are classified in to the basis of geometry. They are

* Regular polygon
* Irregular polygon
* Equiangular polygon
* Equilateral polygon
* Convex polygon
* Concave or non-convex polygon
* Crossed polygon.

To know more click on next blog:
Geometry

Other links:

Pre calculus tutorials

Tuesday, August 31, 2010

Types of Prime Numbers

Types of Prime Numbers:(The prime numbers)
1. Balanced primes:
Prime numbers that ought to be the average of the earlier prime & following prime.In other words, earlier prime, prime itself, next prime ought to be in arithmetic progression.
Example:
5, 53, 157, 173, 211, 257, 263, 373, 563, 593, 607, 653, 733, 947, 977, 1103.....
2. Bell number primes:
These primes are the number of separations of a set with n members.
Example:
2, 5, 877, 27644437, 35742549198872617291353508656626642567....
3. Carol primes:
These type of primes are having the kind of (2n-1)2-2
Example:
47, 223, 3967, 16127, 1046527, 16769023, 1073676287, 68718952447....

my next blog is on:
Hexagon problems

other helpful links:
Prime numbers

Friday, August 27, 2010

Pythagorean triples

Free triple 3

Question: Which of the following is not a Pythagorean triples?


A ) 5 cm, 10 cm, 12 cm
B ) 6 cm, 8 cm, 10 cm
C ) 3 cm, 4 cm, 5 cm
D ) 5 cm, 12 cm, 13 cm

The right answer is Option A
Get more on:
Factors of 26
How to find factors of 70

Tuesday, August 24, 2010

Problems Factor calculator

Example Problems for factor by Grouping Calculator:

Problem 1:-

x3 – x2 + x -1

Solution:-

first group the first and last two terms together like,

(x3 – x2) + (x - 1)

Now we can factor out x2 from the first group and 1 from the second group.

x2(x - 1) + 1(x - 1)

now we can factor out (x - 1), so

(x - 1) (x2 + 1)

Now the factors of x3 – x2 + x -1 are (x - 1) (x2 + 1)

more on

algebra help

Formula for mean



Thursday, July 8, 2010

Types of Lines

Types of lines:

Perpendicular lines:

When the angle of 90 degree on two lines that two lines are said to be as perpendicular lines. This perpendicular line is represented as ‘_’. The perpendicular line does not have any postulates but solve some theorems. They are perpendicular lines and slopes theorem, perpendicular to parallel theorem and two perpendiculars theorem.


Parallel lines:

The separate two coplanar lines are called as parallel lines that are this line does not intersect with each other. The distance between the two lines are equal and it is represented as | |. The parallel lines are illustrating the two postulates.

Corresponding angles postulate: The angles are same when the transversal is cut the two coplanar lines. So we can say that lines are parallel.

Parallel lines postulate: If the transversal cut the two parallel lines, the same measure angles are present.