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Mathematics 14 Online
OpenStudy (aonz):

Another question please Simplify S= 1/2 (2^x + 2^-x) D = 1/2 ( 2^x - 2^-x) Find S+D

OpenStudy (aonz):

@phi help please

OpenStudy (aonz):

my bad ill draw it again

OpenStudy (aonz):

|dw:1361573400599:dw|

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