3,988 Answered Questions for the topic precalculus

#### Precalc question

A street light is 10 feet above a straight bike path. Olav is bicycling down the path at a rate of 15 MPH. At midnight, Olav is 33 feet from the point on the bike path directly below the street... more

12h

#### Is the function True or False

Which of the following is true for  ?Question options: 1) There is a removable discontinuity at x = 3. 2)  There is a non-removable discontinuity at x = 3. 3)  The function is continuous for... more

17h

#### List discontinuities for function

List the discontinuities for the function f(x) = cot(  ). Question options: 1) n(  ), where n is an integer 2)  n(  ), where n is an integer 3)  n(  ), where n is an integer 4)  There are... more

17h

#### Is the function continuous

Is the function  continuous? Question options: 1) Yes 2)  No

17h

#### Find where equation is discontinuous

Where is  discontinuous? Question options: 1) f(x) is continuous everywhere 2)  1 3)  1, 4 4)  4

17h

#### Find value where f(x) is continuous everywhere

To two decimal places, find the value of k that will make the function f(x) continuous everywhere. Question options: 1) 1.88 2)  9.00 3)  3.76 4)  None of these

17h

#### Find limit using direct substitution

Find the limit of the function by using direct substitution.Question options: 1) Does not exist 2)  −6 3)  6 4)  0

17h

#### Find lim x --> 25

What is ?Question options: 1) 0 2)  -10 3)  1 4)  Does not exist

17h

#### Find lim x --> -2

What is ? Question options: 1) −∞ 2)  ∞ 3)  0 4)  −2

17h

#### Find the limit --> 0

Find .Question options: 1) 0 2)  Does not exist 3)  4)

17h

#### Find lim x --> 1 f(x) using graph

Using the graph of f(x) below, find .Question options: 1) 2 2)  −1 3)  −2 4)  Does not exist

#### arithmetic combinations

f(x) = x2 + 1 and g(x) = x - 41) (f + g)(2)2) (fg)(6)3) (fg)(5) + f(4)

#### Write answer as a + bi

Simplify and write answer as a + bia. (2 + 5i) + (-2 - 4i)b. (6 + 8i) (3 - 3i)

#### Synthetic Division

Use synthetic division to solve:x5 - 4x4 - 2x3 + 4x2 + x = 0

#### Evaluate the six functions without a calculator for the given angles using period as an aide

0= 8pi/3sin0cos0tancscseccot 0 = -13pi/6sincostancscseccot

#### Math calculus Question

Solve the following applied problem using a system of equations. The sum of three numbers is 35. The second number is twice the first, and the third number is twice the second. What are the numbers?

#### How do you memorize the Unit Circle?

The unit circle can be daunting. It is necessary in all higher math classes and I am positive you will have a quiz or test on filling in the X and Y coordinates for each of the angles in the Unit... more

#### Can you help me to solve this

A line has equation y=5x+4. this line has slope:any line parallel to this line has slope:any line perpendicular to this line has slope:

#### Volume of Cylinder

The radius of a 12 inch right circular cylinder is measured to be 4 inches, but with a possible error of ±0.2 inch. What is the resulting possible error in the volume of the cylinder? Include units... more

#### Find Maximum Volume

A 160-inch strip of metal 20 inches wide is to be made into a small open trough by bending up two sides on the long side, at right angles to the base. The sides will be the same height, x. If the... more

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