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For help with sections 5.1 and 5.2: http://www.youtube.com/watch?v=pviWtesNnAY&feature=related
5.3 covers solving trigonometric equations. When solving an equation try:
5.4 goes over the sum and difference formulas. These are used in identities and to evaluate values that aren't on the unit circle. Here are some examples:
cos(x+y)=cos(x)cos(y)-sin(x)sin(y)
sin(x+y)=sin(x)cos(y)+cos(x)sin(y)
5.5 covers multiple-angle and product-sum formulas. An example of a double-angle formula is:
An example of a power-reducing formula is:
An example of a half-angle formula is:
An example of a product-to-sum formula is:
And an example of a sum-to-product formula is:
Good luck everyone!
Sn = (n/2)(a1 + an)
You can use this equation to add up the numbers in a Arithmetic Sequence.
Example:Evaluating Factorial Expressions
Definition of Summation Notation- The sum of the first n terms of a sequence is represented by
Where i is called the index of summation, n is the upper limit of summation, and 1 is lower the limit of summation
Sigma Notation for Sums