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 line, L, makes an angle of 30 degrees with the positive direction of the x-axis. Find the equation of the line perpendicular to L, passing through (0,-4).
Differentiate the equation: 3x^2 + 4x + 3
Solve log_2(3x + 7) = 3 + log_2(x – 1), x > 1.
Calculate the rate of change of y(t) = 1/(4t), when t = 8