Help with this math Transformation

Thread starter kasse
Start date Mar 7, 2007
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Transformation

In summary, a math transformation is a way of changing the position, size, or shape of a figure or graph by applying a set of rules or equations. We use math transformations to visualize and understand geometric concepts and solve problems in various fields. There are four main types of math transformations: translation, rotation, reflection, and dilation. The specific steps for performing a math transformation depend on the type of transformation and the starting figure or graph, but generally involve knowing the rules or equations and applying them to each point or coordinate. Some real-world applications of math transformations include architecture, computer graphics, and cartography.

Mar 7, 2007

kasse

Can anyone explain why (cos(x))^2 = (1+cos(2x))/2 ?

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Mar 7, 2007

ziad1985

cos(x)=(Exp(ix)+Exp(-ix))/2 right? do u know this formula?
square before and after the '='
then simplify it..

Mar 7, 2007

HallsofIvy

Science Advisor

Homework Helper

If you don't want to use complex numbers, remember that cos2x= cos² x- sin² x so that the right hand side is (1+ cos² x- sin²x)/2. Do you see an "obvious" way to simplify 1+ cos² x- sin²x?

Related to Help with this math Transformation

1. What is a math transformation?

A math transformation is a way of changing the position, size, or shape of a figure or graph. It involves applying a set of rules or equations to the original figure or graph to create a new one.

2. Why do we use math transformations?

Math transformations are used to help us visualize and understand geometric concepts, as well as to solve problems in various fields such as physics, engineering, and computer science. They also allow us to manipulate figures and graphs to better analyze data and make predictions.

3. What are the different types of math transformations?

There are four main types of math transformations: translation, rotation, reflection, and dilation. Translation involves moving a figure or graph horizontally or vertically without changing its shape. Rotation involves rotating a figure or graph around a fixed point. Reflection involves flipping a figure or graph across a line of symmetry. Dilation involves stretching or shrinking a figure or graph without changing its shape.

4. How do I perform a math transformation?

The specific steps for performing a math transformation depend on the type of transformation and the starting figure or graph. Generally, you will need to know the rules or equations for the transformation and apply them to each point or coordinate in the original figure or graph. This may involve using a grid or coordinate plane to help with visualization and calculation.

5. What are some real-world applications of math transformations?

Math transformations are used in many fields and industries, such as architecture, computer graphics, and cartography. In architecture, transformations are used to create scale models of buildings. In computer graphics, transformations are used to create animated objects and special effects. In cartography, transformations are used to create accurate maps of the Earth's surface.