Trig
In which quadrants is cosine negative?
2 and 3
Simplify f(x) = (x2 + 5x + 6)/(x2 +2x - 3).
f(x) = (x+2) / (x-1)
Simplify: (x2-1)(x+3)
x3+3x2-x-3
Solve: 4(x - 1) + 2 = 6(x+2)
x=-7
Convert pi/4 to degrees.
45 degrees
Simplify (x3+6x2+5)/(x2-3x-4)
x(x+5)/(x-4)
Find the zeros of f(x) = 4x3 + 14x2 + 6x.
x = 0, x = -1/2, x = -3
Evaluate log2(1/16)
-4
A triangle has side lengths 3, 4 and 5. What is cosine of the smallest angle?
4/5
Multiply and simplify: (x-5)/(x4-2x3) times (x2-4)/(x2-3x-10)
1/x3
Classify the polynomial by degree and number of terms:
f(x) = 6x3 - 4x
cubic binomial
Find the zeros using the quadratic formula: f(x) = -2x2 + 3x + 2
x = 2, -1/2
Explain why sin(x) = 1/2 has two solutions for x.
Sine is positive in the first and second quadrant.
Where is x undefined in the function f(x) = (x2-36)/(8x+24)
When x = -3
What is the y-intercept of f(x) = 2(x-1)(x+2)?
(0, -4)
Simplify (4x2y3/2x5y)2
4y4/x6
From the observation deck of a skyscraper, Christian measures a 51 degree angle of depression to a ship in the harbor below. If the observation deck is 1129 feet high, what is the horizontal distance from the base of the skyscraper out to the ship? Round your answer to the nearest tenth of a foot if necessary.
About 914 feet
Where does the hole occur in the following function:
f(x) = (x2 - 5x)/(-3x2 - 15x)
(0, 1/3)
Describe the end behavior for the function f(x)=-3x4
As x goes to negative infinity, f(x) goes to negative infinity. As x goes to infinity, f(x) goes to negative infinity.
Find the inverse of y=6x1/3 - 2.
y-1=(x+2/6)3