Lemma
EasyCurve sketching
Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) §3.4 Graphs, #2 · Calculus · Curve sketching

Another way to compute the heart rate uses marks for 6-second intervals

Another way to compute the heart rate uses marks for 6-second intervals. Doctors count the cycles in an interval.
(a) How many dark lines in 6 seconds?
(b) With 8 beats per interval, find the rate.
(c) Rule: Heart rate = cycles per interval times ____.

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Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) · §3.4 Graphs, #2

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