What does dy/dx represent?
dy/dx represents the gradient of a curve. The d represents an infinitesimally small range so it is essentially as though you are doing change in y over change in x like you would for a y = mx +c graph but over a very small range. This is why if you work out dy/dx for a straight line you would get a number whereas for a curve you will get a function of x as the gradient of the line changes depending where on the curve you are.
MD
Related Maths A Level answers
All answers ▸Given that y= 1/ (6x-3)^0.5 find the value of dy/dx at (2;1/3)
Differentiate ln(x)/x
The circle C has centre (2,1) and radius 10. The point A(10,7) lies on the circle. Find the equation of the tangent to C at A and give it in the form 0 =ay + bx + c.
Differentiate f(x)=(x+sin(2x))^4