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mws_ele_nle_txt_secant_examples

# mws_ele_nle_txt_secant_examples - Chapter 03.05 Secant...

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Chapter 03.05 Secant Method of Solving a Nonlinear Equation – More Examples Electrical Engineering Example 1 Thermistors are temperature-measuring devices based on the principle that the thermistor material exhibits a change in electrical resistance with a change in temperature. By measuring the resistance of the thermistor material, one can then determine the temperature. For a 10K3A Betatherm thermistor, Figure 1 A typical thermistor. Thermally conductive epoxy coating Tin plated copper alloy lead wires the relationship between the resistance R of the thermistor and the temperature is given by   3 8 4 3 ln 10 775468 . 8 ) ln( 10 341077 . 2 10 129241 . 1 1 R R T where T is in Kelvin and R is in ohms. A thermistor error of no more than C 01 . 0 is acceptable. To find the range of the resistance that is within this acceptable limit at , we need to solve C 19   3 8 4 3 ln 10 775468 . 8 ) ln( 10 341077 . 2 10 129241 . 1 15 . 273 01 . 19 1 R R and   3 8 4 3 ln 10 775468 . 8 ) ln( 10 341077 . 2 10 129241 . 1 15 . 273 99 . 18 1 R R Use the secant method of finding roots of equations to find the resistance

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mws_ele_nle_txt_secant_examples - Chapter 03.05 Secant...

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