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 ▸Prove that (1-cos2x)/sin(2x) = tan(x) where x ≠ nπ/2
Sketch y = 9x – 4x^3, showing where the curve crosses the x axis.
Two masses A and B, 2kg and 4kg respectively, are connected by a light inextensible string and passed over a smooth pulley. The system is held at rest, then released. Find the acceleration of the system and hence, find the tension in the string.
If z1 = 3+2i, z2= 4-i, z3=1+i, find and simplify the following: a) z1 + z2, b) z2 x z3, c)z2* (complex conugate of z2), d) z2/z3.