3,988 Answered Questions for the topic precalculus

4h

If θ = π/3, find the value of each expression. 6 sin(θ) =
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8h

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
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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
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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
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17h

Is the function continuous
Is the function  continuous? Question options: 1) Yes 2)  No
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17h

Find where equation is discontinuous
Where is  discontinuous? Question options: 1) f(x) is continuous everywhere 2)  1 3)  1, 4 4)  4
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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
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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
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17h

Find lim x --> 25
What is ?Question options: 1) 0 2)  -10 3)  1 4)  Does not exist
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17h

Find lim x --> -2
What is ? Question options: 1) −∞ 2)  ∞ 3)  0 4)  −2
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17h

Find the limit --> 0
Find .Question options: 1) 0 2)  Does not exist 3)  4) 
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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
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1d

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

Write answer as a + bi
Simplify and write answer as a + bia. (2 + 5i) + (-2 - 4i)b. (6 + 8i) (3 - 3i)
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1d

Synthetic Division
Use synthetic division to solve:x5 - 4x4 - 2x3 + 4x2 + x = 0
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1d

Evaluate the six functions without a calculator for the given angles using period as an aide
0= 8pi/3sin0cos0tancscseccot 0 = -13pi/6sincostancscseccot
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1d

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?
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1d

Find an equation of the circle that satisfies the given conditions. Center (2,-3) and passes through (9,2)
Give the answers in terms of x and y.
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2d

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
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3d

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:
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3d

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
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3d

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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3d

Find an equation of the line that satisfies the given conditions. Through (−1, −3); perpendicular to the line 2x + 7y + 8 = 0
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3d

Find an equation of the line that satisfies the given conditions. Through (5, 2); perpendicular to the line y = 7
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3d

Find the value of k if (a+b) is a factor of a^2(b+c)+b^2(c+a)+c^2(a+b) + k·abc and with this value of k factorize the expression.
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