# Calculator Calculus by George McCarty

By George McCarty

How THIS e-book DIFFERS This publication is ready the calculus. What distinguishes it, although, from different books is that it makes use of the pocket calculator to demonstrate the idea. A computation that calls for hours of work while performed via hand with tables is sort of beside the point as an instance or workout in a starting calculus path. yet that very same computation can turn into a fragile representation of the idea whilst the scholar does it in seconds on his calculator. t in addition, the student's personal own involvement and simple accomplishment provide hello~ reassurance and en­ couragement. The computing device is sort of a microscope, and its magnification is 100 millionfold. we will have an interest in limits, and no degree of numerical approximation proves whatever concerning the restrict. although, the by-product of fex) = 67.SgX, for example, acquires genuine that means while a scholar first appreciates its values as numbers, as limits of 10 a hundred one thousand t a short instance is 1.1 , 1.01 , 1.001 , •••• one other instance is t = 0.1, 0.01, within the functionality e/3t+9-3)/t. ix distinction quotients of numbers, instead of as values of a functionality that's itself the results of summary manipulation.

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Try Xo = -2 and x. 1 ~+ = (TIX. 2 )-1 ~ - 2. When this process converges to a zero z, divide f(x) by x-z just as in the two previous exercises and search for further zeros in the quadratic factor of f. Finally, sketch a graph of f displaying your results. 11. 81 D2 - D3 /3. 5, and T(D) is the change in body temperature in degrees Fahrenheit due to that dosage (when there is no trace of the drug in the body to begin). Find the dosage (to the nearest milligram) required to raise body temperature by 5°.

F(x)-lO) 3:+2 = 3x+4, and thus that for each positive integer n, = ot. 3. 3 x 4! (nx)-IO) 8! (nx)-IO) laJ9b. DIDJ[]72 O. 0ClIIlD1 2. CJqm O. 21JC16 If we interpret this table using the same standards we have used previously, it is not clear that there is convergence to O. (f(x)-10) has values that never get as close as 1/100 to 0, whereas we have been obtaining convergence in at least 7 digits. The fact that h(2) = 0 exactly is reassuring, but that sort of fact will not be available on an 8-digit machine when the limiting value for x is not an 8-digit rational number (see Exercise 2, for instance, when y = 1:2 is irrational).

We lim ~ denote by xtl II-xL by the limit of this function as x approaches 1 by taking on only values less than 1. Similarly, the one-sided Limit as x approaches 1 from above. 1, respectively. . lim I-x lar table to 1nvest1gate xtl 8. 9. ~ -x Make a simi- L· Make a table to establish the following limit: lim x 4 _x 3 _24 X+-2 x L +x_2 If a bank deposit of \$100 earns 6% interest for a year, then it returns \$106 at the end of the year. 09 dollars. The extra 9 cents is the interest paid during the last half year on the \$3 interest that was paid on the \$100 principal during the first half year.