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

Given that sin(θ)=3√10/10, and θ is in Quadrant II, what is sin(2θ)?

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

u = 2i - 5j and v = -i + 3j, determine -6u - 3v.

Precalculus Trigonometry

1d

u = <4, -2> and v = <3, 1>, determine -3u + 3v

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

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.
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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