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Calculate the derivative of x^x

This problem is best solved using implicit differentiation and by tackling each side of the equation individually. First write down the problem as "y = x^x". Recalling that log rules can be used to...
GH
Answered by George H. • Maths tutor
4213 Views

What are the different types of renewable energy sources?

There are various renewable energy sources in existence which utilize the natural resources of the planet, such as wind, sun, biomass, wave power, geothermal. The energy produced varies considerably, and it ...
LK
1856 Views

How do you work out the median of a set of numbers?

The median is the middle number of a set of ordered numbers, i.e. halfway along. To find the median of the data set you should arrange the numbers into order, lowest to highest. Count equally from both ends ...
LK
Answered by Lydia K. • Maths tutor
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Use BIDMAS to answer 2 + 7 x 10

Using BIDMAS we know that we should do multiplication before addition and therefore we would get, 7 x 10 which is 70 and then 2 + 70 which is 72.This is really important to have rule about orders of operatio...
EB
Answered by Eleanor B. • Maths tutor
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A bullet is fired horizontally from a gun at a height of 1.5m at 280m/s. Calculate the time taken for it to hit the ground. A second bullet is fired from an adjacent gun at 370m/s. Calculate the distance it travel before the first bullet hits the ground.

Time for first bullet to hit ground: s = -1.5m, u = 0ms -1 , v = ?, a = -9.81ms -2 , t = ?.s = ut + 1/2(at 2 )-1.5 = 0 + 1/2(-9.81 t 2 )9.81t 2 = 1.5 2 = 3t = sqrt(3/9.81) = 0.55s (2s.f.)Distance travelled b...
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Answered by Ayush N. • Physics tutor
4341 Views