Try to discuss the relationship between the straight line X-my + 2 = 0 and the circle x ^ 2 + y ^ 2 = 4 according to the value of M

X & sup2; + Y & sup2; = 4, the center of the circle is the origin (0,0), and the radius is 2
The straight line X-my + 2 = 0 must pass through the point (0,2), just on the circle,
If:
① M = 0, then x = - 2, tangent of line and circle and point (0,2)
② M ≠ 0, then there must be more than one intersection point between the line and the circle, which is actually two intersections

RELATED INFORMATIONS

1. In the fifth power of the polynomial ax plus the third power of BX minus 3, when x is equal to 3, the polynomial is 5, and when x is equal to negative 3, the value of the polynomial is obtained
2. Solving inequality system: 3 / 2x-2
3. Solution equation: 3.5 (X-5) + 0.5x = 4.25 (x is unknown)
4. Calculation: the first (3Y & # 178;), # 179; - 5Y & # 178; [the fourth power of 2Y - Y (3y-1 / 5)]; Second: given X & # 178; - 2x = 2, simplify the following formula first, and then evaluate: (x-1) &# 178; + (x + 3) (x-3) + (x-3) (x-1) Third: Factorization factor: 2x & # 178; + 2xy-3x-3y;
5. 2X multiplied by 6 minus 24 equals 12 plus 3x
6. Factorization factor (x + y) (x + y + 2XY) + x ^ 2Y ^ 2-1
7. The solution of the following equation is obtained by using the function image and checked by written calculation （1）5x-1=2x+5；(2)-1/2x+4=3/2x+2
8. For a two digit number, the new two digit number is 47 times of the original number after exchanging the number of its ten digits with the number of its individual digits. What is the original two digit number? How many double digits are there?
9. 1, can calculate simply to calculate 25 + 68 + 75 + 322, solve the equation. 4 + 1 / 5x = 26
10. A question about the principle of computer composition A question about the principle of Computer Organization Suppose the machine word length is 16 bits. For fixed-point representation, the numerical value is 15 bits and the sign bit is 1 bit; for floating-point representation, the rank code is 6 bits and the mantissa is 10 bits, each including 1 sign bit; the bottom of the rank code is 2 1. What are the maximum integer and the minimum negative number when representing the fixed-point original code integer? 2. What are the maximum integer and the minimum negative number in the decimal representation of fixed-point original code? It's better to write in detail, the teacher let me go up next class, but I can't, Wuwu~ I've given you all my marks. I must study hard in the future~
11. Given PA, vertical plane ABC, AB, vertical BC, verification, plane PBC, vertical plane PAB
12. A triangle can be formed by three line segments with length of 3M, 5M and 16 (M > 0)
13. It is known that, as shown in the figure, in the trapezoidal ABCD, ad ‖ BC, let ad = vector a, BC = vector B, e and f respectively on the waist AB and DC, and AE: be = DF: CF = 1:2 (1) Using the linear combination of vectors a and B to represent vector ef (2) Is EF parallel to ad? Why? (3) If ad = m, BC = n, find the length of EF
14. Fourth grade volume I mathematics exercise book page 23 answers
15. Please write down all the answers in the first volume of the fourth grade mathematics exercise book. Thank you!
16. Sixth grade mathematics: fraction mixing, simple operation. Very urgent! It's going to be used tonight! Could you hurry up, please? 1/7×6/13+8/13×1/7=? 2-5/11÷9/22-5/9=? （5/6-3/4）÷5/12+9/5=? Write out the process ~ ~ online waiting, thanks!
17. Simple calculation of 1003 × 996 grade 6 mathematics
18. Requirements: four operations, must have scores, preferably with brackets It's hard! There are more than three steps, and there are simple operations. But the answer should be better, The answer should not have negative numbers and too many circular decimals Don't fool people by copying from the Internet
19. In a division formula, if the sum of the product of division and quotient plus the divisor is 32.8, and the quotient is the smallest sum, what is the divisor? What is the divisor?
20. 2001 out of 2002 times 2003 It's the easiest