Development and application of a formula
Enlighten the students thinking. This simulation function from the use of calculators,
vibram five fingers outlet, analysis series, the nature of estimates, the estimated range, solving equations, and explore the calculator in mathematics teaching in secondary schools are used effectively. Currently operating computer-aided math questions, students have begun a major expansion into classroom learning and examinations. We should not be confined to the use of calculators for students to learn to replace the cumbersome operation, more importantly, to develop a variety of meaningful functional development of student thinking. For example, the unique combination of calculator and Shuxingjiege thinking, do nothing to solve the problems we usually think. This will not only live issue for many the use of modern technology (including calculators) to solve clever, but as we inspire students to actively thinking of a good opportunity. A simulation function of a chemical experiment example 1 amino acid molecules in the temperature (t) changes in the next volume () changes the situation, record the following set of data: f1.93.14.05.26.21.54.17.5l2 .118.1 are prepared to use the following formula one, similar to that of these data to meet the law, which is more appropriate () (A) V = f (B) V = 2 (C) = {(t- 1) (D): ÷ 12 two (E) V = 2 (t-I) (F) = a 0.02 (f a 6) + l8. (2002 Shanghai Jing'an District entrance mock examination papers) to analyze this problem through two sets of data obtained in experiments to find the relationship between the data and further found that its inherent regularity. We first describe the data by point method, where the data roughly approximate to draw the curve, then the conscious use of calculators for computing verified, a more accurate simulation of the relationship. Figure 1 by the image features (was access data or image obtained from the above data, you can get close like the answer is (c). Example 2 2 Analysis series known function '() = a · bx image over two points A (4,1 / 4) and B (5,1). (1) Find the function f (x) analytic style; (2) ii ~ a = lo ~ af (11), 0; (3) Xt in (2) in a,. and S, whether the number of columns as integer lO DAc,
radii shoes sale, a Li b, √ n +. ·. cosZDAB = AD on the BD,. '.131) = √ a2 a b. for DF on the AC in F. even EF. Figure 5 consists of three vertical theorem,
ed hardy uk, EF on the AC,
Salvatore Ferragamo outlet, thus the demand for the DFE in △ ABD in, DE = a, and DF/24-, L2,
herve leger sale, ', sinZDFE = DE =- b-Ja2-b2 ·-Ja2 + b2 = a, i/a4 ~-b4. ~ 0ZDFE: arcsin ---. one b4. 4 general conclusions known ray AO, AB, AC, ZOAB = 0l , ZBAC = 02, OAC = 0, then the plane OAB BAC above the necessary and sufficient conditions are: cosO = cosOI · ∞ s, (O <oI, o2 <, r).
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