Recent content by Hip2dagame

^No, because the mean (as I calculated) is 1.69. That's clearly always lower than 6 or 5. Anyone else?

Homework Statement Two problems: 1) We're given a probability distribution function with possible values and their probabilities of occurring: X=1, P = .67 X=2, P = .19 X=3, P = .05 X=4, P = .04 X=5, P = .03 X=6, P = .02 And we need to find P(XBAR >=6) and P(XBAR >=5). I don't...

ok, done, fixed integral is now ∫(0 to 4) ∫(0 to y/2) [(-e^(-y^2))/4] dy. Same problem with the e^(-y^2) not being integratable.

Homework Statement ∫(0 to 2) ∫(2x to 4) [e^(-y^2)] dydx This was a question given for a multivariable class exam a couple years ago, and we don't ever learn about the exponential integral in that class. Homework Equations We know how to go about solving this, BUT... The Attempt at...

Homework Statement I'm confused on whether or not two functions would be equivalent or not. Let's say x(t) is a triangle with height 1, width 1. The hypotenuse of it is the function t (with a slope of 1). I'm told that x((t+2) / 4) then is making it 4 times as wide and left-shifting the...

Ok so giving this a second try, for the first one, using the root test, we end up with (1 + (1/n)) * x, so the limit is absolute value of x, which must be less than 1 to converge, so we set the equation -1< x< 1 plugging -1 into x we get , (-1)^n * (1+(1/n))^n , a diverging alternating...

Homework Statement Find the radius and interval of convergence for the two series: 1) [(n+1)/n]^n * (x^n), series starting at n=1. 2) ln(n)(x^n), series starting at n=1. Homework Equations You're usually supposed to root or ratio your way through these. The Attempt at a...

Homework Statement Let's say I've got simple y''(t) + 2y' + 1 = x(t), with maybe y(0) = 3 and y'(0)=1. the input x(t) is 12cos(20t). Using a laplace transform, determine zero state response of the output y(t). I know eventually I end up with the Y(s) and X(s) form, and then I have to...

Homework Statement Use any method or test to see if the series converges or diverges. Homework Equations The series: ((1/n) - (1/n^2))^n The Attempt at a Solution Well the integral test won't work because there's no real integral for that according to Wolfram Alpha. Also if you...