Steff

This page lists questions and answers that were posted by visitors named Steff.

Questions

The following questions were asked by visitors named Steff.

42) Given the demand equation 3 + p -40=0 and the supply equation 2x - p + 10=0, where p is the unit price in dollars and x represents the quantity in units of a thousand, determine the equilibrium quantity and the equilibrium price.

50) the monthly demand and supply functions for the Luminar desk lamp are given by p=d(x)= -1.1x^2 + 1.5x + 40 p= s(x)= 0.1x^2 + 0.5x + 15 respectively, where p is measured in dollars and x in units of a thousand. Find the equilibrium quantity and price.

29) Find the derivative of the function. F(X)=2x^2(3-4x)^2 This is what I have so far. I am usually pretty good at simplifying but I am missing something here. f'(x)=2x^2(4)(3-4x)^3(-4) + (3-4x)^4(4x) Here is where I go wrong. (Answer from book) =4x(3-4x)...

41) Find the derivative. h(x)= (3x^2 + 1)^3 / (x^2 - 1)^4 This is where I am at the moment.... h'(x)= (x^2-1)^4 (3)(3x^2+1)^2(6x) - (3x^2+1)^3(4)(x^2-1)^3(2x) This is what I am trying to get....(not final answer) =2x(x^2-1)^3(3x^2+1)^2[(9)(x^2-1) - (4)(3x...

I just need my answers checked. 1) Find the derivative. f(x)=3x^5/4 - 8/9x^9/8 + x^2 - 9x + 1 Answer: f’(x)= 15/4x^1/4 - x ^1/8 + 2x -9 2) Let f(x)= 7x^3 - 9x. Find f’(5) Answer: f’(x)=21x^2-9 f’(5)=516 3) Find the given limit by evaluating the derivative...

Find the slope and an equation of the tangent line to the graph of the function f at the specified point. f(x)=-1/3x^2+5x+5: (-1, -1/3) Answer: f’(x)=-2/3x + 5 y=-2/3x -1 I re-worked the problem and got f'(x)=5, y=5x+ 14/3 This is from a multiple choice t...

Please help. f(t)=(4+√t)(4t^2-5) This is what I have so far... (4+√t)(8t)+(4t^2-5) (1/2t^-1/2) Am struggling to get this in factored form. Am working on a multiple choice take home test and nothing I am getting matches.

Just want to check and see if I am setting this up right. Let y=f(x)=x^2-6x Find the average rate of change of y with respect to x in the interval from x=4 to x=5 (5^2-6*5)- (4^2-6*4)/ 5-4

25) Suppose F(x) = g(2x^2 + 2). Find F(1) if g'(4) = -3. This is the question on my take home test. Seems to me that the question is wrong. Should it be f'(1) if g'(4) = -3? Your thoughts?

Am I right so far? G(x)=e^x sqrt(1+x^2) =e^x(1+x^2)^1/2 =e^x(1/2)(1+x^2)^-1/2(2x) + e^x(1+x^2)^1/2 So I used product rule, chain rule, and exponential function with base e

this is an example from the book. I do not understand where the 1/2 comes from in (1/2u)du. Find indefinite integral. ((.3x-.2)/(.3x^2-.4x+2))dx u=.3x^2-.4x+1 du= 2(.3x+.2)dx 1/2u(du)= 1/2 In u + c 1/2 In(.3x^2-.4x+2) + c

Find the indefinite integral. ∫((e^-x-1)/(e^-x + x)^2) dx I am trying to use the substitution method. u=e^-x + x du= -e^-x+1 dx Right so far?

help! ∫((ln x^2)/x)) dx u= ln x^2 du= 2 ln x dx (?) Not sure how to set this one up?

integrate (e^x-x)^2 dx

3 In (√x + 7)

Use the drop down to complete the sentence. The main purpose of Hammurabi's Code was to ____. Options: A.) make sure everyone in his empire knew the law. B.) punish his political rivals. C.) conquer and rule a new empire. D.) encourage the growth of trade

Solve for x -10-2x=-8 A. x=1 B. x=4 C. x=-1 D. x=9

Answers

The following answers were posted by visitors named Steff.

I found this but wasn't sure how accurate is was: 4.) There is a major effect of the nitrate ion in solution on the color emission because the nitrate ion is the oxidizing agent in the compound without it you could not produce a spectrum so there would no...

Should be =4x(3-4x)^3(-12x+3)

Thanks. I will check my answer.

Here are my options a) 10t^2+32t√t - 5 / √t b) 20t^2-64t√t - 5 / 2√t c) 20t^2+ 32t√t - 5 / 2√t d) 20t^2+64t√t - 5 / 2√t e) 10t^2-32t√t - 5 / √t

Thanks. I was missing the step where you plug in the -1 to get slope.

Thanks. I see my mistake now.

Thanks. I am on my ipad and it is such a pain to type this stuff out. I get a little lazy.

got it figured out.

and help with this one... f(t)= e^7t * In (t+4)

Use the drop down to complete the sentence. Sargon created the world's first empire by_____. A. defeating Hammurabi in battle. B. destroying the city-state of Ur C. uniting Akkadian and Babylonian lands. D. conquering Mesopotamian city-states.

Solve for x. 5=2x-11 A.) x=-8 B.)x=8 C.)x=-3 D.)x=3