If I divide the specific heat capacit in KJ/mol by the molar mass of the fuel in question, why do I get the specific heat capacity in KJ/g. KJx(g)/molxmol = KJg/mol^2 is not KJ/g …

What are the most popular graphic calculators used in the maths subjects? TI89? etc

I know 3 points: (0,0) (34,3) and (68,0) I also know the gradient at the origin (0,0) is -0.123, and the gradient at (68,) is 0.123 If the general equation is y = ax4 + bx3 + cx …

Is the period of |sin 4x| equal to π/4 or π/2? Wouldn't it be π/4, since we go '2π over n'? The solution says it is π/2 instead.

Show that f(x)=1/(2-x) can be approximated by f(x)=(1/2)+(x/4) for x close to 0. I am sure this is a linear approximation question, but I don't get it at all. Could I plea …

How do we raise things to 'powers' and 'inverse powers' in matrix form or using matrix method?

Hi all! Using simultaneous equations - how can we solve y = x + 2 and y = (2/(x+1)) - 1? Thanks!

Can somebody please explain how this formula works? logbx = logax / logab

Can you rank the past VCAA exams for the subjects that you studied in order of difficulty?

I thought I mastered VCE differentiation, then these two questions turns up =P

I understand how D is not a circle, but why are the other options circles?

Can't remember how to do these :( Integrate 1/(x^2 +x+2)

How do I put: 2 sqrt(x2 + 3) + x(2x+1)/sqrt(x2 + 3) into a single fraction?

Really stuck with this one, don't recall doing these in the text book

I know it's suppose to be basic, but I somehow forgot them =P 4cos(7pi/6) 8sin(5pi/4) tan(7pi/3)