Recent content by help

Hello, good afternoon guys. I need a little help from you: D 1)n a positive integer. f(x)=x(1-x)^n Solve the equation f'(x)=0 in 0<x<1 this question I asked and found x = 1 / (x + 1) ok 2)An be the maximum value of f(x)=x(1-x)^n in [0,1] Calculate lim (n+1)an n tending to infinity the...

thanks a lot!

judge whether the following expressions are larger than, smaller than or equal to zero i) a+b+c ii)a-b+c iii)4a+2b+c iv)c-e I know that <0, b> 0, c> 0, d> 0 and e <0 but I don't know what to do

ok i) a≤ -2 or a>0 when we calculate delta = 0, find a = -2 as the tangency point. But I saw through the graph that the system will have only one ordered pair as a solution for <= - 2 or a> 0 ii) a=0 iii)-2<a<0 iv) does not exist solving the system we find x²-ax-a-1=0 ∆ = (-a)² - 4.1.(-...

hello, thanks for answering i) a≤ -1 or a>0 * a=-1asymptote ii) a=0 iii)-1<a<0 iv) does not existI can see it by looking at the graph, but how can I prove it algebraically?

Good night! How do I find the values of a (real) so that the solution of this system is? (i) just an ordered pair? (ii) exactly two pairs. (iii) exactly 3? (iv) is there a place where you have more than 3 pairs as an answer?So... I thought like this: I developed the first part. I solved the...

Thanks! to end the question has an item c... c) Calculate the percentage of error observed |q-r| in relation to an actual quantity sold each month. From there, your opinion on the quality of this estimate. So, I would like to be sure of what I did. percentage error = E/r what does your...

Oh ok I got it. It is a maximum error. then E = 250

it's clearing up a little bit. I can leave | q-3000 | ≤500 because so 2500≤q≤3500. That is E = 500 ? p q r r-q |r-q| 3 3500 3250 -250 250 3,2 3400 3570 170 170 3,5 3250 3100 -150 150 4 3000 2890 -110 110 4,5 2750 2550 -200 200 5 2500 2500 0 0

the lowest possible value for E would be zero correct? to end the question has an item c... c) Calculate the percentage of error observed |q-r| in relation to an actual quantity sold each month. From there, your opinion on the quality of this estimate. So, I would like to be sure of what I...

Sorry! The company believes that a good estimate q of the quantity sold can be given by q = 5000 - 500p. Give the lowest value you can for E so that |q - r | ≤ E in all observations made.

Hi, thanks for replying. Letter Bb) Over 6 months, several prices were tried. The following actual sales figures are observed, according to with each price charged: The company believes that a good estimate q of the quantity sold can be given by Give the lowest value you can for E so that...

attached resolution attempt

Homework Statement Let r be a positive constant. [/B] Consider the cylinder x2 + y2 ≤ r2, and let C be the part of the cylinder that satisfies 0 ≤ z ≤ y. (3) Let a be the length of the arc along the base circle of C from the point (r, 0, 0) to the point (r cos θ, r sin θ, 0) (0 ≤ θ ≤ π). Let...