Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) §11.2 Planes and Projections, #45 · Multivariable Calculus · Vectors & geometry

The aVR lead is

About the ECG and heart vector.

The aVR lead is $- \frac{1}{2} L_{I} - \frac{1}{2} L_{II}$ . Find the aVL and aVF leads toward the left arm and foot. Show that $aVR + aVL + aVF = 0$ . They go out from the center at $12 0^{\circ}$ angles.

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Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) · §11.2 Planes and Projections, #45

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