When I solve cos(3t)=0 for t, I get this:
t = (2 * ?n2 - 1) * pi / 6
Anyone know what the symbol is where I put the "?". I can't decipher it, or what it's supposed to represent.
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if you clear your calculator's memory and try it again you will get ?n1 and not ?n2
this is the calculator's way of keeping track of how many of the ? it has given you when solving equations
that symbol just means that
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