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MIT 18.01 Single Variable Calculus (OCW) 14 Online
OpenStudy (anonymous):

how do you solve lim x->0 Tan6t/Tan2t I forgot

OpenStudy (stacey):

Have you learned L'Hopital's rule?

OpenStudy (stacey):

If not, you can use the sum identity to change tan (6x) into an expression with tan(4x) and tan(2x) and then use it again on tan (4x).

OpenStudy (anonymous):

=lim x->0 3*(tan 6t/6t)*(2t/tan 2t)

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