Graphic Calculus.pdf

another diagram could be drawn to give the slope at each point, thus enabling the driver to know exactly what load he can safely take over that part of his trip.
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GRAPHIC CALCULUS Calculus Divulges the Inner Nature of Engineering Problems and Shows Where Improvement is Possible Reprinted from Popular Aviation, December 1942, courtesy Flying Magazine

by Raoul J. Hoffman - SLOPES -

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