2,133 Answered Questions for the topic Pre Calculus

13h

Find the open interval on which the function f(x)=x^2/x+1 is increasing or decreasing

Find the open interval on which the function f(x)=x^2/x+1 is increasing or decreasing

13h

Find the open interval on which the function f(x)=x^4-3x^2+5x is increasing or decreasing

Find the open interval on which the function f(x)=x^4-3x^2+5x is increasing or decreasing
Pre Calculus Precalculus Pre Calculus

7d

surface area of a sphere is S(x) = 4πx2

The surface area of a sphere is S(x) = 4πx2, where x is the length of the radius of the sphere. Restrict the domain to create a one-to-one function. Find and describe the inverse function.
Pre Calculus

15d

For the polynomial below, 3 is a zero. g(x)=x^3 -7x^2 + 9x + 9 Express g(x) as a product of linear factors.

process would be nice but just the answer is fine
Pre Calculus Math Calculus Mathematics

16d

The value of k

If , what must be the value of k in order for f to be continuous?–2–112
Pre Calculus Math Calculus Mathematics

16d

Which phrase describes

Let . Which phrase describes the continuity and differentiability of f at x = 1?continuous and differentiablecontinuous, but not differentiablenot continuous, but differentiablenot continuous and... more
Pre Calculus Math Calculus Precalculus

16d

The average value of f(x)

If the average value of f(x) = x2 + 6kx over the interval [0, 6] is 84, then k = ..4.24.
Pre Calculus Math Calculus Mathematics

16d

The population density

The population density of a city r miles from the city center is P(r) people per square mile. Which expression represents the total number of people living within a circular region extending 5... more
Pre Calculus Math Calculus Precalculus

16d

Let f (a function)

Let f be a function such that . Which statement best interprets this limit?The function f has a value of –5 when x is 5.The function f has a value approaching –5 as x approaches 5.The... more
Pre Calculus Geometry Algebra

25d

Radius of a circle.

Consider a circle centered at (-3,2) of radius 3. a) Draw this circle on the xy-plane and label it carefully. Use your picture to determine the number of solutions to x = −5. b) What point(s) lie... more
Pre Calculus

29d

Write an equation for the function whose graph is described. The shape of f(x) = x2, but shifted four units to the right and six units down

Write an equation for the function whose graph is described.The shape of f(x) = x2, but shifted four units to the right and six units down

04/20/22

Give the rectangular coordinates for each of the following polar coordinates

(1/2,π/4) = ?(π,π)
Pre Calculus

04/18/22

2 sin(2𝜃) = 1. Find the solutions in the interval [0, 2𝜋).

Pre Calculus

04/12/22

Find the area of the triangles. Round to the nearest tenth. As in the text, ( α , a ) , ( β , b ) and ( γ , c ) are angle-side opposite pairs.

Questions:(a) α=14 o, β=17 o, a=7 units.(b) γ or angle c=58α=50c=28.39(c)  α=53 degreesa=27 units, b=12.2 units
Pre Calculus

04/08/22

Pre Calc Question

Convert the exponential equation 𝑄=0.35𝑒^0.7𝑡to the form 𝑄=𝑎𝑏𝑡 and enter the values of a and b below.a=b=
Pre Calculus

04/08/22

Pre Calc Question

A bacteria has a doubling period of 10 days. If there are 2550 bacteria present now, how many will there be in 24 days? First we must find the daily growth rate (Round this to four decimal... more
Pre Calculus Calculus

03/10/22

find the derivative of the following function

𝑓(𝑥) = [(x2 − 9) √𝑥 + 2]2 show solution
Pre Calculus Math Calculus

03/10/22

Helppppppppp !!!!!!!!!!!!

Find the equation of the tangent line to the function 𝑓(𝑥)=4√x−6 at the point (16,10). Provide your answer in slope–intercept form of a linear equation, 𝑦=𝑚𝑥+𝑏, where 𝑚 is the slope and 𝑏 is the 𝑦-... more
Pre Calculus Math Precalculus

03/09/22

Please Help....

Find the difference quotient 𝑓(𝑥)−𝑓(3)/𝑥−3 when 𝑓(𝑥)=1+5𝑥−5𝑥^2. Simplify the expression fully as if you were going to compute the limit as 𝑥→3. In particular, cancel common factors of 𝑥−3 ... more
Pre Calculus Precalculus Pre Calculus

03/09/22

Determine analytically if the following functions are even, odd, or neither. Circle your choice for each and show the work/reasoning that led to your conclusion.

Determine analytically if the following functions are even, odd, or neither. Circle your choice for each and show the work/reasoning that led to your conclusion.a. f(x)=√(x+10)b. g(x)= 3√(x^4) -... more

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