Recent content by calchelp

i can't believe i made that stupid of a mistake. so a^2 = 2x so the volume is 16 thank you so much.

diagonals run from the parabola y = - sqrt x to the parabola y = sqrt x. the diagonal is the distance from y = - sqrt x to y = sqrt x how is that not 2 sqrt x? i honestly can't figure it out. is there a formula to figure it out?

4^(3/2)= 8 8*2=16 16/3= 16/3 i still did not get 16...

i need someone to explain to me where i am making a mistake because i am getting an answer that differs from that of the book. the solid lies between planes perpendicular to the x-axis at x = 0 and x = 4. the cross-sections perpendicular to the axis on the interval 0 ≤ x ≤ 4 are squares...

thank you! dick and tiny-tim!

can anyone confirm this please?

ok... so after about 20 minutes of looking at it i realized that i completely made up the x^3 i don't know why or where it came from... so is the answer: sin(-x^4)2x - sin(-x^2) please tell me that is right. i am about to go insane!

is the answer: sin(-x^4)2x - sin(-x^3)

can i change the title of this thread??

need help evaluating derivative of sin(x^2) sorry I'm new to this site. i tried substitution which did not get me anywhere. next, i did taylor series but could not get an answer. now i am stuck. i am almost positive i have to use a taylor series. with the series i got x^2 -...

calc 2 final tomorrow need urgent help! Evaluate the derivative of the function G(x) = ({integral} from x to x^2) of sin(-t^2)dt this was on my review for the final and i just cannot get an answer. any help will be greatly appreciated.