1,063 Answered Questions for the topic Pre-Calculus

Pre Calculus

09/11/18

Cos x= 1/3 possible x values?

If x= 1/3 what are the two possible answers between 0 and 2pi
Pre Calculus Math Calculus

09/10/18

What are the ranges to these two functions and how do you find them?

H(t) =(t^2-1)/t+1   f(n) = √(4-n^4)
Pre Calculus

09/09/18

Develop an expression that represents the area of the park

greg works as a caretaker at a park. In the fall, he rakes the leaves in the rectangular park. The length of the park is (3x+1)m. The width of the park is (2x+4)m 
Pre Calculus Calculus 1

08/27/18

Write an algebraic sentence involving distance which is equivalent to the given algebraic sentence

A. |x-5|=1   B. |x+3|=5
Pre Calculus

08/22/18

Given: f(x) = x 2 + 2x + 1, find f(x + h) and simplify.

 Please Help me with this ASAP!!!!
Pre Calculus

08/22/18

Prove that f(x) = x+3/2 and g(x) = 2x - 3 are inverses.

Help Please
Pre Calculus Algebra 2

08/18/18

If 3x+y = k(x-3) then x=?

I need help on how you would rearrange the question in terms of x
Pre Calculus

08/08/18

How many people only ride the bus in the morning?

There are 32 people on the bus in the morning and 40 people on the bus in the afternoon. Of 20 people only ride the bus in the afternoon, how many people only ride the bus in the morning?
Pre Calculus

08/08/18

Convert the equation to polar form x^2+y^2-3y=0?

x^2+y^2-3y=0   how does this get converted into polar form?
Pre Calculus

07/25/18

( sin ( x ) ) ( tan ( x ) ⋅ cos ( x ) − cot ( x ) ⋅ cos ( x ) ) = 1 − 2 cos ^2 x

I don't know how to verify this identity. Can you explain it to me?

06/08/18

Use the Trapezoid rule to approximate

Use the Trapezoid Rule to approximate the area under the curve f(x)=2x^3-x+5 from x=5 to x=29. Use 4 trapezoids to find your approximation. 

06/08/18

Estimate the area under the graph.

Estimate the area under the graph of f(x) = 1/(x+4) over the interval [-2.3} using five approximating rectangles and Right endpoints.  Rn= ---- Repeat the approximation using left endpoints. Ln=... more

06/08/18

Approximate the area under the curve

Use the Midpoint Rule to approximate the area under the curve f(x)=x^2-3x+6 from x=4 to x=24. Use 5 rectangles to find your approximation.    Answer= ---
Pre Calculus Math Precalculus Math Help

06/06/18

Find the coordinates of the hole:

Find the coordinates of the hole of  f(x) = x+1/x^2-4x-5   Show all work.

06/03/18

Derivative Equations

Let f(x)=x^3+3x^2-144x+1    on what interval is f increasing (including the endpoints in the the interval)? Interval of increasing = ----   On what interval is f decreasing (including the... more
Pre Calculus Calculus Derivatives

06/02/18

Derive this equation

Derive f(x) = 5+ (4/x) +(3/x^2)

06/02/18

Derive the Equation

Let y=x^7-4x^5+8x^3-2x-7 Then y(2) is --- Then (dy)/(dx) is ---  (d(2))/(dx) is ---  The second derivative of y is ---  and y''(2) is -----
Pre Calculus

06/01/18

Find the magnitude and direction angle for the vector v=6 cos 137 degreesi+6 sin 137 degrees j.

Pre-calculus
Pre Calculus

06/01/18

component form of -u-v given that u=(-5,6) and v=(7,-3)

Pre-calculus
Pre Calculus Calculus Derivatives

05/31/18

find the derivative

find the derivative of: 10x^(1/4) + 7x^(-6)
Pre Calculus Calculus Derivatives

05/31/18

Derive the equation

If f(x) = 3/(x^2), find f'(1)
Pre Calculus Math Calculus Trigonometry

05/07/18

How do I determine c1/c2 based on the values below?

C1= 4/3 ( cos 5pi/4+ i  sin 5pi/4) C2=3 (cos pi/4+ i sin pi/4)
Pre Calculus Math Calculus Trigonometry

05/07/18

How do I find the polar form of 4x+3y=5

What is the polar form of 4x+3y=5
Pre Calculus Math Calculus Trigonometry

05/07/18

What is (0-8i)^1/3?

What is (0-8i)^1/3?   I think that the answer is -2i^(1/3)

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