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Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) §1.1 Velocity and Distance, #53 · Calculus · Derivatives

(hardest) The forward-back function is … for …, … for

(hardest) The forward-back function is $f (t) = 2 t$ for $0 \leq t \leq 3$ , $f (t) = 12 - 2 t$ for $3 \leq t \leq 6$ . Graph $f (f (t))$ and find its four-part formula. First try $t = 1.5$ and 3.

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Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) · §1.1 Velocity and Distance, #53

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