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解题不注意隐蔽条件,因忽视或不能很好应用隐蔽条件,仍常常是学生在解答某些题目时产生错误的根源。如何解决?采取专题复习,集中讨论的办法,将可以收到较好的效果。一编选题组,让学生先练我编选了以下一组题日,集中让学生先作练习。 1.解不等式arcsin(3-x/2)≤arcsin(x/3-2)。 2.已知a(1-b~2)~(1/2)+b(1-a~2)~(1/2)-1,求证a~2+b~2=1。 3.方程组(Ⅰ)为参数与方程(Ⅱ)y=b/ax(a>0,b>0,
Solving the problem does not pay attention to the hidden conditions. Because neglecting or not being able to apply concealment conditions, it is still often the source of mistakes students make when answering certain topics. How to solve? Take a special review and focus on the discussion methods, you will receive better results. A compilation of selected questions, let the students practice I selected the following set of questions, focus on allowing students to practice first. 1. Solve the inequality arcsin(3-x/2) ≤ arcsin(x/3-2). 2. Known a(1-b~2)~(1/2)+b(1-a~2)~(1/2)-1, verify that a~2+b~2=1. 3. The equations (I) are parameters and equation (II) y=b/ax (a>0, b>0,