Clickk on tthe matrix palette on the panel on the left of  the screen to insert a matrix.

y=ln3x+3

To find the tangent equation at say x=1,

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with(Student[Calculus1]):

Tangent(ln3x+3, x=1);

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To graph both the function and it's tangent line at x=1

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Tangent(ln3x+3, x=1, output = plot);

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http://www.mapleprimes.com/questions/202529-Evaluating-A-Function-At-More-Than-One-Point

First button in the Calculus palette. I use it all the time.