Identify which equation does not define a trigonometric function for a point P(x,y) on the unit circle:
A. cott=xy,x=0
B. csct=y1,y=0
C. cost=x
D. sect=x1,x=0
Determine which statement about the function f(x)=⎩⎨⎧∣x−3∣6−3x−(x−3)2x<00≤x<3x≥3 is false: A) limx→2f(x)=0 B) limx→3−f(x)=−3 C) limx→0−f(x)=6 D) limx→3+f(x)=0
1. Find the identity element for the operation a∗b=a+b−3.
A. 3 B. 2 C. 0 D. -3 2. Calculate the sum of the sequence 4,−2,1,−21,….
A. −43 B. 43 C. 38 D. 8 3. Solve 256(x+1)=8(1−x2).
A. −1,−35 B. −83,−35 C. 38,53 D. 38,35 4. For roots α and β of x2+3x−4=0, find α2+β2−3αβ.
A. -11 B. 20 C. 21 D. 29 5. Rationalize 3−21.
A. 3−2 B. 33+2 C. 23+2 D. 3+2 6. Solve log5(6x+7)−log56=2 for x.