When you integrate, why do you need to add a +C on the end?
Integration can be used to undo differentiation. So if you had an equation that was y=5x+2 and differentiated to get dy/dx=5. When you integrate it you would only get y=5x, so the +2 is lost, to make sure you take this number into consideration you should always put a +C on the end of the equation. This means that it would be y=5x+C.
KM
Related Maths A Level answers
All answers ▸f(x)=x^3 + x^2 -10x +8 show that (x-1) is a factor of f(x), Factorise f(x) fully , sketch the graph of f(x)
Find the coordinates of the turning points of the curve y = 4/3 x^3 + 3x^2-4x+1
show that tan(x)/sec2(x) = (1/2)sin(2x)
Integrate 5(x + 2)/(x + 1)(x + 6) with respect to x