06/21/21

So i got this question on my assignment about matrix it says that i have to proof one of the matrix properties

Assume A is a 3 x 3 matrix with |A| ≠ 0. Show that A-1XA = I , by using your own example.I've tried using some random numbers but it seems that it doesn't work, so there must be some rules to proof... more
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06/18/21

Find the domain of the function

Find the domain of the function. (Enter your answer using interval notation.) g(x) =  x 7x2 + 6x − 1   
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06/18/21

Solve the equation for 𝜃 if 0° ≤ 𝜃 < 360°. (Enter your answers as a comma-separated list.) sin 2𝜃 + 3 cos 𝜃 = 0
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06/16/21

Find the invariant point(s) algebraically between the given function and its reciprocal function.

y = 1/2x+7
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06/15/21

Find the limit, if it exists. lim x→−6 7x + 42 |x + 6|
Find the limit, if it exists. lim x→−6 7x + 42 |x + 6|
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06/15/21

Calculate the double integral.
please help me
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06/15/21

If two resistors with resistances R1 and R2 are connected in parallel, as in the figure below, then the total resistance R, measured in ohms (Ω), is given by 1/R = 1/R1 + 1/R2
if R1 and R2 are increasing at rates of 0.3 Ω/s and 0.2 Ω/s, respectively, how fast is R changing when R1 = 60 Ω and R2 = 120 Ω? (Round your answer to three decimal places.)
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06/14/21

Which angle is coterminal with the angle (-17π)/3 on the interval [0, 2π)

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06/12/21

Let f(x)=x+4/x+8 f^−1(−3)=
Letf(x)=x+4/x+8f^−1(−3)=
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06/12/21

Given the equation y=4tan(7x−56)The period is:   
Given the equation y=4tan(7x−56)The period is:   The horizontal shift is:____   units to the _____
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06/12/21

white the equation
Write the equation of the circle centered at (5,−6) that passes through (−5,8).
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06/11/21

My homework needs to be turned in 45 minutes. Please help me with question because I continue to get it wrong. Please help me as soon as possible

Determine whether f is an exponential function of x. If so, find the constant ratio. A.) f is not an exponential function.B.) f is an exponential function with a second difference of 5.C.) f is an... more
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06/10/21

If f(x) = 3x-8, what is f^-1(-4)
I was given the following Piecewise function:f(x) = 3x-18, x<0f(x) = x2-8, 0≤x<3f(x) = (x-2)3, x≥3And I was asked:What is f -1(-4)It was multiple choice. The given answers were:A: -20B: 3/4C:... more
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06/09/21

A cubical block of ice with edges 20cm long starts to melt . The edges decrease at 2.5cm/hr. What is the rate of change of volume of the block two hours later?
Calculus 12 word problem im stuck on
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06/09/21

What is the value of x given that segment RQ is tangent to circle P at point Q?
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06/09/21

David has a 76% average on the four quizzes he has taken thus far in history class. He has one more quiz to take before final grades are computed, and the five quizzes will be weighted equally.
What is the minimum score that David needs on the fifth quiz in order to raise his average to 80%?A.100%B. 90%C. 96%D. 84%
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06/08/21

please help, using trigonometric substitution
∫9x2cos (4-3x3) dx
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06/08/21

please help me with this using POLYNOMIAL FUNCTIONS USING SUBSTITUTION RULE (with solution pleaseee)
∫ x √2x2-9 dx ∫ x3 (1+3x4)5dx
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06/08/21

Please help me with my Algebra homework I need help as soon as possible please please
1.) Which points on the graph shown are within 5 units of the point (4, −3)?   A.) P, Q, R   B.) N, O, P   C.) R, S, T   D.) L, M, N2.) Identify an equation in standard form for an ellipse with its... more
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06/07/21

Find the given derivative by finding the first few derivatives and observing the pattern that occurs.
(d^115) / (dx^115) ⋅ (sin(x))
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06/05/21

If the point (7, 6) lies on the graph of y = (x − 5)^2 + k, where k is some constant, which other point must also lie on the same graph?
The choices you can choose from are a. (−5, 6)b. (3, 6)c. (5, 6)d. (9, 6)
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06/05/21

Derivatives of Natural Log Functions
What is h′(x) when h(x)=ln(2x^2+x+3)?
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06/03/21

Practice question for a test. I have no idea how to do this, but I do have the answer
Hello!I am practicing for an upcoming test I have to take, and I have a practice test with practice problems and answers. The question I'm having trouble with is "A rectangular poster is three... more
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06/03/21

Rewrite cos(x−2π/3) i im lost this is fustrating
Rewrite cos(x−2π/3) in terms of sin(x) and cos(x)
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06/03/21

Find the coordinates of a point on a circle with radius
Find the coordinates of a point on a circle with radius 10 corresponding to an angle of 75∘(x,y) = (____,____)Round your answers to three decimal places.
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