Ujian Matematika

Given the function f : x 2x + 5 with the domain {-1, -3, 5, 7}, what is the range?

• {3, 1, 13, 19}

• {3, -1, 14, 11}

• {3, 2, 15, 15}

• {3, -1, 15, 17}

Four children named Tohir, Erik, Taufiq, and Zainul have their own preferences. Tohir likes group study and writing short stories. Erik likes playing computer games and swimming. Taufiq likes writing short stories and swimming. Zainul only likes swimming. Who likes to write short stories but does not like group study?

• Tohir

• Erik

• Taufiq

• Zainul

If f(x) = 3x^2 + 4, then what is the pre-image of 23?

• 1

• -2

• 3

• -4

A relation R from set A={1,2,3} to B={5,6,7,8}. How many mappings are possible from set A to set B?

• 65

• 64

• 63

• 62

Which of the following equations represents a straight line?

• 4y + x^4 - 5 = 0

• 6x^3 - 3x - 6 = 0

• x^2 = 8y + 3

• 4y + 2x = 0