Recent content by sebastian tindall

i was following your explanation until i got to this part, I don't know how to input the symbols correctly on this forum but the total derivative in my understanding is (for spherical coords) delfrdr + delfthetadtheta + delfphidphi so if I have a "direction" as you call this, would this just...

Homework Statement Hi there, what is the difference between the partial derivative and the total derivative? how do we get the gradient "the actual gradient scalar value" at a point on a multivariable function? what does the total derivative tell us and what does the partial derivative tell...

Hi there, I have a very basic maths problem that has highlighted a hole in my knowledge. I was answering the following question: The vertices of a triangle are A, B, C, with position vectors a, b, c . Show that the area of the triangle ABC is 1/2|b×c+c×a+a×b|. and got the answer as...