Recent content by smith007

Thank you for the reply. I had noticed that the intercept term was different on the second regression but I couldn't seem to figure out the exact relationship. It does not change the intercept by exactly two because of the smaller coefficient on my new dummy term. Thanks again.

I have run a regression using a single dummy variable and have my outputs. I then changed the values of my dummy variables from 1 and 0 to . 2 + 3(x) where x was 1 or 0 with the same 1 and 0 positions in my data as the original regression. I can see that the coeffeicient of the dummy terms...

I forgot one of the squares on the bottom, bad mistake. So my equation becomes: y' = 2x / 1 - |x| + x2 -2 = 2x / 1 - |x| + x2 but we know x is positive because of the range of the original question so it becomes: -2 = 2x / 1 - x + x2 Solve for x = 1? I still don't think that...

Homework Statement Function defined as: y = The integral from 0 to x2 of 1 / (1 - Sqrt(t) + t) There exists a point where the slope of the tangeant is = -2. Find the x coordinate at this point. Homework Equations Fundemental Theorem of Calculus The Attempt at a Solution...

Thank you for the fast response. Your help is much appreciated.

Homework Statement x in the following is actually Theta Limit as x -> 0 (cos(x) - 1) / sin(x) Homework Equations none The Attempt at a Solution Multiply both sides by cos x +1 [ (cos x - 1) / sin x ] * [ (cos x + 1 )/ (cos x + 1)] = [ cos2 x -1 ] / sin(x) (cos(x)...

Thank you. I am new to the forums here and I must say they are great!

Homework Statement Find the derivative of the function. Simplify where possible. arctan(x - sqrt(1+x2)) Homework Equations Chain rule The Attempt at a Solution let u = x - sqrt(1+x2) y = tan-1(u) dy/du = 1/(1+ u2) sub in u. dy/du = 1/1 + (x - sqrt(1+x2))2 du/dx =...

I hate to bump up an older thread but I just ran into this same question. We must have the same text or something. The question is to find a and b so that f is continuous everywhere. So can we not take lim->2 of the first equation for 4. The lim->2 of equation 2 for 4a -2b+3. Then...