阿摩:千點萬點,不如名師指點
75
(15 秒)
1(B).

1. ( ) How many pairs of positive integers (x, y) are there satisfying x2 + y2 = 6x + 8y?
(A) 4
(B) 5
(C) 7
(D) 12


2(C).

2. ( ) Given f(x) = x3 + 3x2 − 2. How many distinct real roots of f(f(x))?
(A) 3
(B) 5
(C) 7
(D) 9


3(D).

4. ( ) Known a, b, c are side of ∆ABC and loga b is a double root of equation x2 − 2x + ?inC + c??C = 0 then which is correct in the followings?
(A) acute triangle
(B) equilateral triangle
(C) obtuse angled triangle
(D) isosceles right-angled triangle.


4(B).
X


5. ( ) Choose the correct relations of the values of following definite integrals.

(A) I1 < I2, I3 < I4
(B) I1 < I2, I3 > I4
(C) I1 > I2, I3 < I4
(D) I1 > I2, I3 > I4



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今日錯題測驗-教甄◆數學-阿摩線上測驗

Sweet apple 剛剛做了阿摩測驗,考了75分