Loga + logb

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Log Rules:

1) logb(mn) = logb(m) + logb(n)

2) logb(m/n) = logb(m) – logb(n)

3) logb(mn) = n · logb(m)

Change of Base Formula:
logs.H97.Gif

To find any term 
of an arithmetic sequence:
ArithG2.Gif

To find the sum of a certain number of terms of an arithmetic sequence:
ArithG3.Gif

To find any term 
of a geometric sequence:
ArithG11.Gif

To find the sum of a certain number of terms of a geometric sequence:
ArithG12.Gif

mean

To calculate the Variance, take each difference, square it, and then average the result:

And the Standard Deviation is just the square root of Variance, so:

Circle35.Gif   =  15.35889742 = 15

morepy37.Gifmorepy38.Gifmorepy39.Gifmorepy40.Gifmorepy41.Gifmorepy42.Gifmorepy43.GifMMj03957550000[1].Gifmorepy44.Gif

Law of Cosines

lawofc1.Gif

lawofc2.Gif

lawofc3.Gif
circle-unit-304560.Gif

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