Differentiate 5x^2 - 7x +9
The general rule for differentiation is multiply by the power and decrease the power by one.
So if we take each term individually starting with 5x^2, and multiply by the power giving 10 then reduce the power by one hence 10x. Similarly for the next term, multiply by 1 and then reduce the power giving -7. When differentiating a constant term, as x is to the power of zero, when you multiply it by the power it will be zero. Thus leaving us with the answer of 10x-7
RG
Related Maths Scottish Highers answers
All answers ▸Why is the gradient of a curve at a point the same as the gradient of the tangent if you can't use gradient formula on a curve?
Solve algebraically the system of equations: 4x+5y=-3 and 6x-2y=5
Find ∫((x^2−2)(x^2+2)/x^2) dx, x≠0
Differentiate the equation: 3x^2 + 4x + 3