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The TangentSecantTutor(f) command launches a tutor interface that shows how the secant line between a and a point b on the graph of a f approaches a tangent line, as b approaches a.

If f is not specified, TangentSecantTutor uses a default function.

If a is not specified, TangentSecantTutor uses a default point.

If var is not specified, TangentSecantTutor uses a default variable.

$\mathrm{with}\left(\mathrm{Student}\left[\mathrm{Calculus1}\right]\right)\:$

$\mathrm{TangentSecantTutor}\left(\right)$

$\mathrm{TangentSecantTutor}\left(x^3-2\right)$

$\mathrm{TangentSecantTutor}\left(x^2\,4\right)$

$\mathrm{TangentSecantTutor}\left(x^2\,x=4\right)$