9,282 Answered Questions for the topic precalculus

Precalculus

9h

#### Considering only the values of α and β for which secαsecβcos(α−β) is defined, which of the following expressions is equivalent to secαsecβcos(α−β)?

Select the correct answer below:cotβ−cotα1+tanαtanβtanα−tanβsin(α+β)/1−tanαtanβ
Precalculus

9h

#### Solve the following equation for θ on the interval [0,360∘). −5√3 sec(θ)−8=−18

Select all correct answers. 90∘ 210∘ 330∘ 30∘ 45∘ 120∘
Precalculus

9h

Precalculus Math

13h

#### Expand log(a^4/b^−4c^4) to rewrite as a sum, difference, or product of logarithms

Expand log(a^4/b^−4c^4) to rewrite as a sum, difference, or product of logarithms
Precalculus Calculus Algebra Functions

14h

#### Read Description Set-builder notation { x |1 ≤ x ≤ 3 or x > 5 }

Is it correct to use the ^(and) sign instead of or in the above notation?
Precalculus Math

17h

#### expand ln(3/11^k) to rewrite as a sum, difference, or product of logarithms.

expand ln (3/11^k )to rewrite as a sum, difference, or product of logarithms.
Precalculus Math Calculus

17h

#### Find the radius and the interval of convergence of the power series

summation from n=1 to infinity(x-2)n)/((2n)(3n+2)2
Precalculus

1d

#### On the graph of f(x)=cotx and the interval [−2π,0), for what value of x does the graph cross the x-axis? Choose all answers that apply.

Select all that apply: −2π −3π/2 −π −π/2 −π/4
Precalculus Calculus

1d

#### Polynominal With Real Coefficients

Find a degree 3 polynomial with real coefficients having zeros 4 and 2i and a lead coefficient of 1. Write P in expanded form. Be sure to write the full equation, including P(x)=.
Precalculus Trigonometry

1d

Precalculus

1d

Precalculus

1d

#### Solve the following equation for θ on the interval [0,360∘). −7sec(θ)+7=14 Select all correct answers.

Select all that apply: 180∘ 270∘ 240∘ 0∘ 225∘
Precalculus

1d

#### Considering only the values of α and β for which sin(α+β)/sinαsinβ is defined, sin(α+β)/sinαsinβ= ?

Select the correct answer below:cotαcotβ+1tanα−tanβtanα+tanβsin(α+β)1−tanαtanβcotα+cotβ
Precalculus

1d

#### If 0≤x<2π, find all values of x that satisfy the following equation. cos(3x)=−√3/2

Select the correct answer below:x=4π3 and 5π3x=5π6 and 7π6x=5π18,7π18,19π18x=4π9,5π9,10π9,11π9,16π9,17π9x=5π18,7π18,17π18,19π18,29π18,31π18
Precalculus Calculus Algebra Functions

1d

#### Show that the function f (x) = 3(x − 5)^2 + 7 is not one-to-one.

Precalculus Calculus

2d

#### Polynomial Functions

The polynomial of degree 3, P(x), has a root of multiplicity 2 at x=1 and a root of multiplicity 1 at x=−4. The y-intercept is y=−0.8.

2d

#### Use matrices to solve system of eq (if possible). Use Gauss elimination w/ back-substitution. (If no solution, enter NO SOLUTION. If system is dependent, set w = a & solve for x, y & z in terms of a.)

x-4y+3z-2w= 163x-2y+z-4w= -10-4x+3y-2z+w= -5-2x+y-4z+3w= -19(x, y, z, w) = (______)

#### Write the system of linear equations represented by the augmented matrix. (Use the variables x, y, z, and w, if applicable.)

7 -5    -148 3 -16= ________ ________
Precalculus Math Algebra 2 Calculus

2d

#### State the elementary row operations applied to the first augmented matrix A to transform it to its row-equivalent matrix B.

A = 1 −2 7 6 4 1 B = 1 −2 7 0 16 −41 A: 2R2 + R1B: 5R2 - 15R1C: (-6)R1 + R2D: Interchange R1 and R2E: None of these
Precalculus Math Algebra 1 Algebra 2

2d

#### Write the matrix in row-echelon form. (Note: Row-echelon forms are not unique.)

1 2 -1 63 7 -5 5-2 -1 -3 2= ____ _____ ____ ____ ____ _____ ____ ____ ____ _____ ____ ____

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