A quadratic function can be used to model the path of a ball if thrown up in the air in a vertical trajectory. What is the slope of the tangent line for this function when the ball reaches its maximum height?
slope is zero
Use the function below to answer the following: Determine the concavity of f(x).
f(x) = x^2 – 2x -15
concave up
Evaluate the logarithm: Log5 (1)
0
Given the function f(x) below, find
lim_(x->-7^-) f(x)
f(x) = (x+1)(x-2)^2(x+3)
limit is 1944
The equation of a circle is given as x2 + y2 = 36 . Find the equation of the normal line when x = 6 ?
y = 0
Use the discriminant to determine the number of solutions and type of solutions for the equation
4x^2-3x+7=0.
discriminant: -103 no real solutions two imaginary solutions
Solve for x: 2 = x – 5ln(e)
x=7
Given the function below, find its asymptotes:
f(x)=1/(x^2-36)
x=6 and x=-6
The equation of a circle is given as x2 + y2 = 49 . Find the equation of the tangent line when x = -7 ?
x = -7
Find the coordinates for the point of inflection of the function below:
f(x)=x^3+x^2-6x-13
P.O.I. at
(-1/3, -295/27)
A typical beehive contains 20,000 insects. The population can increase in size by a factor of 2.5 every 6 weeks. In theory, after how many weeks will the population of bees increase to 76,293,945?
After 54 weeks
Find the slope of the secant line passing thru the points (-5, f(-5)) and (-2, f(-2)) for the cubic function
f(x)=-1/3(x+2)^3-1
slope is -3
Find the interval where the following function is concave down:
f(x)=x^4-x^2
(-root2(6)/6 ,root2(6)/6)
A person’s weight on the moon is approximately one sixth of the weight on Earth. If a person’s weight on Earth is represented by the variable w, then the function that represents the weight on the moon in terms of the weight on Earth can be given as f(w) = 1/6 w. Find the inverse of the function f(w).
f^-1(w)=6w
Suzanne wants to invest $20,000 in an account for 25 years at an interest rate of 2.75% compounded continuously. Find the accumulated amount in the account at the end of 25 years.
$39,774.75
Find the equation of the tangent line for the function below at the point
(pi, f(pi))
f(x)=Sin(x)
y = -x + pi
Derive the following function:
f(x)=sin(x)^2+cos(x)^2
f'(x)=0
Write the following from least to greatest:
Log7(343), Log2(64), Log5(1), e-2, Log(Log(1010)
Log5(1), e-2, Log(Log(1010), Log7(343), Log2(64)