2013澳大利亚高考数学试题答案(2)

Section I

10 marks

Attempt Questions 1–10

Allow about 15 minutes for this section

Use the multiple-choice answer sheet for Questions 1–10.

1

Which expression is equal to tan xdx?

(A) sec2 x+c

(B) –ln(cos x)+c

2 tan x(C) +c

2

(D) ln ( sec x+tann x)+ c

2

Which pair of equations gives the directrices of 4x2 – 25y2= 100? (A)

x =(B) x =±1 29

(C) x =±29 (D) x =±29

25