15,254 Answered Questions for the topic precalculus

Precalculus Math

03/18/24

Half life Questions
The half-life of substance A is 16 years, and substance B decays at a rate of 30 % each decade.(a) Find a formula for a function f(t) that gives the amount of substance A, in milligrams, left... more
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Precalculus Math

03/18/24

Math Half life equations
The half-life of Palladium-100 is 4 days. After 12 days a sample of Palladium-100 has been reduced to a mass of 4 mg. What was the initial mass (in mg) of the sample? What is the mass 6 weeks after... more
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Precalculus Trigonometry

03/17/24

If tan 𝛼 = − 20 21 and cot 𝛽 = 35 12 for a second-quadrant angle 𝛼 and a third-quadrant angle 𝛽, find the following. (a)    sin(𝛼 + 𝛽) (b)    cos(𝛼 + 𝛽)
(a)    sin(𝛼 + 𝛽)(b)    cos(𝛼 + 𝛽) 
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03/14/24

Which of the following integrals represents the volume of the solid obtained by rotating the region bounded by the curves 𝑦=sin(𝑥) and 𝑦=0, with 0≤𝑥≤𝜋 about the line 𝑦=1?
I keep getting it wrong. Here's the link to the question: https://ibb.co/BNDJS8J
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03/12/24

Calculus Help!!
A farmer wants to fence in a rectangular field. The farmer must use a different type of fencing for each pair of parallel sides of the field. One type costs $10 per metre, and the other type costs... more
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03/12/24

calculus Help!!!
Consider the function defined by f(x)= ln( sqrt(|1−x^2|)). •a) State the domain of this function.b) Determine the derivative of ln(sqrt(|1−x^2|)).Be careful to show your work.
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03/12/24

Urgent calculus help
I need help finding some contour lines for the following function:
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03/12/24

Differentiable function of two variables
                                                                 A differentiable function of two variables reaches its maximum value at (0,0) being the value of the function 5. A student... more
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Precalculus Math Calculus

03/12/24

Determining the maximum and minimum values of function
Determine the maximum and minimum values of the function f(x,y)=x^2+y^2-2x-4y+5 in the set D = {( x ,y )∈R^2 / x^2 + y^2 ≤ 45}.
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Precalculus Calculus Physics Sat Math

03/11/24

Find the volume of the solid obtained by rotating the region enclosed by...
Here's the link to the question. Can you please show me how to solve it and what is the answer? https://ibb.co/hMMfpP6
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03/11/24

Find the volume of the solid obtained by rotating the region bounded by the curves.
Find the volume of the solid obtained by rotating the region bounded by the curves y=tan^2(x), x=pi/4, x=0, and y=0 about the x-axis. PLEASE HELP ASAP.
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Precalculus Math Calculus

03/11/24

Graphing the domain for the following: g(x,y)=arcsin⁡(x/(x+y))
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03/11/24

What is the range for this function? g(x,y)=arcsin⁡(x/(x+y))
I'm required to find the range of:
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03/11/24

Calculus Help!!!
Evaluate lim x→0 (2sin(x)−sin(2x))/(2e^x −2−2x−x^2)
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03/11/24

Calculus HELP!!!
Find the point on the parabola x^2 =2y that is closest to the point (4,1)
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03/11/24

Calculus Help!!!
Use logarithmic differentiation to find a formula for f'(x) if f(x) = x^sin(x) * (x-1)^20 * (3x^2 + 2)^24.
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03/11/24

Calculus Help!!
A farmer wants to fence in a rectangular field. The farmer must use a different type of fencing for each pair of parallel sides of the field. One type costs $10 per metre, and the other type costs... more
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Expert Answers •2

03/11/24

Calculus Help!!!!
Use logarithmic differentiation to find a formula for f'(x) if f(x) = x^sin(x) * (x-1)^20 * (3x^2 + 2)^24.
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Expert Answers •1

03/11/24

Calculus Help!!!
Find the point on the parabola x^2 =2y that is closest to the point (4,1).
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Expert Answers •2

03/11/24

Calculus Help!! :)
A farmer wants to fence in a rectangular field. The farmer must use a different type of fencing for each pair of parallel sides of the field. One type costs $10 per metre, and the other type costs... more
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Expert Answers •1

03/11/24

Calculus Help!!!

Evaluate lim x→0 (2sin(x)−sin(2x))/(2e^x −2−2x−x^2)
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03/11/24

calculus Help!!!
Consider the function defined by f(x)= ln( sqrt(|1−x^2|)). •a) State the domain of this function. b) Determine the derivative of ln(sqrt(|1−x^2|)).Be careful to show your work.
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Precalculus Math

03/11/24

Write an equation for a rational function with the given characteristics. Vertical asymptotes at x=−1 and x=4 , x -intercepts at (−6,0) and (3,0) , horizontal asymptote at y=−3
Im at a loss here.. thought the answer was : f(x) = -3(x+6)(x-3)/(x+1)(x-4) But it isnt taking it so i have no idea..
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Precalculus Math Algebra 1 Algebra 2

03/10/24

Fractional part function math problem
I found this intriguing math problem online but can't get along with it.I appreciate any help.Prove that if "n" is a natural number, then there is no integer in this interval.[\sqrt(16n+21);... more
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Precalculus Calculus Trigonometry

03/09/24

pre calc help please
Outside temperature over a day can be modeled as a sinusoidal function. Suppose you know the high temperature of 72 degrees occurs at 3 PM and the average temperature for the day is 55 degrees.... more
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