2007年天津高考文科数学试卷和答案（2007 Tianjin college entrance examination liberal arts mathematics papers and answers）.docVIP

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2007年天津高考文科数学试卷和答案（2007 Tianjin college entrance examination liberal arts mathematics papers and answers）.doc

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2007年天津高考文科数学试卷和答案（2007 Tianjin college entrance examination liberal arts mathematics papers and answers）

2007年天津高考文科数学试卷和答案（2007 Tianjin college entrance examination liberal arts mathematics papers and answers） Text block reverse order arrangement, please arrange The eighth part: Basic knowledge of quality, the linear equation, the demand curve equation, basic thought and method of test curve and equation of the relationship between the analytic geometry and reasoning and computing ability. The full score is 14. (I): proof of a problem, and by, may wish to set up them. Due to the point on the ellipse, that is,. Solution, is obtained. The linear equation for consolidation. The origin, to the straight line distance, i.e., The plug type and simplification, namely. Method two: the same method, get the coordinates of the point. Cross point, pedal, easy, so. By the definition of the ellipse, and, So, Solution, and, too, that is. (II): the solution of a set point coordinates. At that time, the knowledge, the slope of the line, so the linear equation, or, among them. The coordinates satisfy the equation group The type II type will be substituted, too, Tidy, So,. From the form . By the type and will know. The type was substituted, . The substitution on the type arrangement. At that time, the linear equation, the coordinates satisfy equations So,. By the knowledge, i.e., Solution. Then, the coordinates of the point is still satisfied. In summary, the trajectory equation for point. Method two: set point coordinates, linear equation, by the linear equation for the pedal,. Remember (obviously), point coordinates satisfy equations By the type 3. By the type 4. Will the type the type substitution. Tidy, So. 5. By the type of 6. By the type of 7. The type and type it into the, Tidy, So the. By the type and will know. The type into it, . The substitution on the type. So, the trajectory equation of point. China Education Online entrance channel China Education Online entrance channel The seventh part: Table: Zero Zero maximum value Minimum value So in the interval, for increasing func