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What is the smallest possible value of the integral ∫(x-a)^2 dx between 0 and 1 as a varies?

This is a minimisation problem, but it's slightly tricky to see what it is we're minimising. Seeing as it's a that's varying, we are going to have to differentiate with respect to a at some point. We're goin...
RT
Answered by Ryan T. • Maths tutor
12159 Views

Explain the 3 pieces of evidence that disprove Kekule's model of benzene.

Kekulé's model of benzene is that it has 3 double bonds, in a ring of 6 carbons. One - Benzene isn't very reactive, so if Kekulé's model were to be correct, there would be 3 double bonds in benzene, and so i...
EW
Answered by Ellie W. • Chemistry tutor
37822 Views

How can I evaluate studies and theories successfully?

Firstly, the structure of each point you make should follow the Point, Evidence, Explanation format (PEE). If you structure each new point/paragraph in this way you can achieve the highest level. Secondly wh...
NB
Answered by Niamh B. • Psychology tutor
33050 Views

What exactly is Natural selection?

Natural selection is the concept that individuals in a population that are best adapted to their environment are most likely to survive and succeed to breed and produce offspring. In turn, the offspring will...
JK
Answered by Joel K. • Biology tutor
3196 Views

Describe the three types of coral reefs and explain why reefs are sensitive to environmental changes

Fringing, barrier and atoll reefs described, with a description of how a fringing reef is close to the coast in shallow water zones, barrier reefs develop through subsidence with a separation between the coa...
HW
Answered by Hamish W. • Geography tutor
2997 Views