# Pre Calculus Exam Review

### 2. What is the finish actions of the feature 3x7 +2x6 -3x4 - x2 + x - 46?

As x→ - ∞, f→ - ∞, and also as x→∞, f→ - ∞.As x→ - ∞, f→∞, and as x→∞, f→ - ∞.As x→ - ∞, f→∞, and as x→∞, f→∞.As x→ - ∞, f→ - ∞, and as x→∞, f→infty.

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### 3. What is ?

x3 - x2 + 5x - 13x2 + 13x - 7x2 + 7x - 13x2 - 3x + 13

### 4. Which of the following polynomials have precisely 3 actual roots, x = 1, -1, and also 3?

x4 -3x2 + 2x - 8x4 - x3 -7x2 + x + 6x5 -3x4 - x + 3x4 +3x2 - 4

1838028

### 6. How many kind of possible positive and negative actual roots does the attribute x3 -4x2 + 3x - 2 have?

1 or 3 positive, 0 negative0or2 positive, and 1 negative0 positive and also 1 negative1 positive and 0 or 2 negative

### 7. The function has what asymptotes, if any?

A vertical asymptote at x = 2A horizontal asymptote at x = 3A vertical asymptote at x = 0 and also an oblique asymptote at y = xA vertical asymptote at x = 2 and also an oblique asymptote at y = x - 2

### 8. Which of the adhering to expressions is not equal to the others?

logax   ### 9. The exponential rate of degeneration of a substance is .08 per year. What is the half-life of this substance in years?

12.5 years 56.5 years 8.66 years 10.035 years

### 10. Which of the complying with bank accounts will certainly be worth the most in 10 years?

\$11,000 at 10% straightforward interest\$9,450 at 9.0% compounded daily\$9,800 at 8.5% compounded continuously\$9,500 at 9.0% compounded quarterly

### 12. Which of the following is a formula for every one of the quadrantal angles?

0≤θ Πθ = , wright here n is an integerθ = 2nΠ, where n is an integerθ = ( +1) , wbelow n is an integer

### 13. Which of the adhering to is not equal to the others?

sin(Π/2)cos(2Π)tan(csc ### 14. Which expression is unequal to the others?

sin2(x)csc2(x)cos2(x) - sin2(x)sec2(x) - tan2(x)csc2(x) - cot2(x)

### 15. Which of the complying with does not settle the equation sin(x)cos(x) = 0?

x = x = x = x =

### 16. What is the amplitude and duration of the function f (x) = 2 cos(2x)?

Amplitude: 1; Period: 2ΠAmplitude: ; Period: ΠAmplitude: 4; Period: Amplitude: 2; Period: Π