Recent content by jason_r

typo lol

im lost...this is as far as i get -(integral) sqrt(u^2 - 9) i don't understand how i can use a trig identity to simplify that

hmm I am having trouble integrating sqrt(u^2 - 9) would i need to use integration by parts?

Homework Statement integral of root(-x^2+10x-16)dx Homework Equations The Attempt at a Solution i can factor the thing inside the root to (x-8)(x-2) if i pull out the negative sign no idea what to do after that

I have a function: y=e^x the tangent line at the point (1,e) would be x*e? in order to find the area between the tangent line, the y-axis and y=e^x i equate these functions and solve for x? I got this far (e^x)/(x)=e how do i solve for x

ok using your method i got 3+- root 1/ 4 how did you get i(?)root 7?

so i should assume m=n=2? why is that also would the answer be 1/2 ?

ok i got up to here: m/(n+m) = x would that be the only possible x coordinate for a local extrema?

take the derivative of the function set equal to zero and solve for x? then if the function increases at a point less than the critical number and decreses after the critlcal point then its a max, and otherway if its min but this function has the variables m and n and i can't solve for...

F(x)=x^m * (1-x)^n where m and n is greater or equal to 2? find the x coordinates of local extrema? would my answer be with respect to m and n? or do i plug in a number for these variables

Need Help Understanding a concept on Buoyancy! Homework Statement I have a beaker on a scale. I suspend a block on a string and place it in the beaker. Will the scale reading be higher or lower than before? I need someone to explain the concept please Homework Equations The...

Homework Statement You begin by measuring one of the hemispheres, finding that it has a mass of 21 g and a diameter of 8.6 cm Basically you have a hemisphere shaped boat with mass 21g and diamter 8.6cm you have to find the heaviest mass of rock that u can put in the boat that won't sink it...

i have no idea ..i used deltaF=pg(A1+A2)d2 and i got 0.35m as the height but the answer is 2.3cm

Homework Statement http://img186.imageshack.us/my.php?image=gdgdfgta2.jpg the question is on the above link (PART B() Homework Equations deltaF=pg(A1+A2)d2 The Attempt at a Solution deltaF=pg(A1+A2)d2 i used that formula and found that the distance was 0.35m

yea the questoin is written correctly. This is part a: use differentiation formulas to find a formula for f''(x) for -infin<x<0 and 0<x<infin and part b is the one i posted