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 ▸The equation x^2 + (k-5)x + 1 = 0 has equal roots. Determine the possible values of k.
If f(x) = 1/(6x^2), where x not equal to 0, find the rate of change when x=4.
y=x^3-3x^2+2x+5 a)Write down the coordinates of P the point where the curve crosses the x-axis. b)Determine the equation of the tangent to the curve at P. c)Find the coordinates of Q, the point where this tangent meets the curve again.
Calculate the rate of change of d(t )=2/(3t), t ≠ 0, when t=6.