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L(x)=cos x => girve the best approximation of the form f(x)=a(e^x)+bx+c Thanks for your helps!

i think you have to use the formula for the surface area which is 2pi ∫ x sqrt(1+(dx/dy)^2)dy i am assuming what you did was to find the area between the 2 curve and what is this "inner and outer surfaces"? that's the part i can't understand.

Hi, I've been struggling with this question and hope that you guys will find a solution. Thanks alot! y=sec(x) & y=tan(x), x=0 to x=pi/2 are the limits and revolved around the x-axis. ~show that the inner and outer surfaces of the solid have infinite area.

Hey guys, i am having some trouble with this titration question, i hope someone will figure it out. thanks! 3.00 g of oxalic acid (C2H2O4) reacts with 42.0 mL of 1.586 M NaOH in a titration. Calculate how many moles of oxalic acid there are in the 3.00 g sample and the molar mass of oxalic acid.

Hey guys, i am having some trouble with this titration question, i hope someone will figure it out. thanks! 3.00 g of oxalic acid (C2H2O4) reacts with 42.0 mL of 1.586 M NaOH in a titration. Calculate how many moles of oxalic acid there are in the 3.00 g sample and the molar mass of oxalic acid.