Write the first 4 terms of the logarithmic series
`log(1-2x)`
Find the intervals on which the expansions are valid.

Write the first 4 terms of the logarithmic series log(1+4x) Find the intervals on which the expansions are valid.

Write the first 4 terms of the logarithmic series log((1-2x)/(1+2x)) Find the intervals on which the expansions are valid.

Write the first 4 terms of the logarithmic series log((1+3x)/(1-3x)) Find the intervals on which the expansions are valid.

Write the first 6 terms of the exponential series e^(5x)

Write the first 6 terms of the exponential series e^(5x)