Compute the first four terms of the sequence of partial sums for the series: ∑n=1[infinity](1/2)^n−1 S1= 1 equation editorEquation Editor S2= 3/2 equation editorEquation Editor S3= 7/4 equation editorEquation Editor S4= 15/8 equation editorEquation Editor Note: answers should be simplified and should not contain decimals. Part 2. Find a formula for the nth partial sum, Sn, that depends only on n.

answer: c.  

step-by-step explanation:

mixtures containing substances that get attracted to magnet can be separated using a magnet. we can separate iron from a mixture of sand and iron, as only iron attracts to the magnet.

since no one answered yet i will give it a shot, not completely sure tho.

i think it should be y=cos(x+2pi), (third answer, answer c)

good luck.

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