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Find all solutions of the equation in the interval [0, 2π]. 5 cos^3 x = 5 cos x

5cos³x = 5cosxFirstly -5cosx from both sides and divide through by 5We have:cos³x-cosx = 0We can factorise this:cosx(cos²x - 1) = 0 For this to be true either:cosx = 0 or ...

Answered by Georgiana C. • Maths tutor

4139 Views

How does ionisation energy vary across a period in the periodic table?

Ionisation energy generally increases across a period in the periodic table. This is because across a period, one more proton is added to the nucleus. This increases the quantity of positive charge so the...

Answered by Jenni V. • Chemistry tutor

1746 Views

How do I remember and use the VANDERTRAMP verbs

Firstly we need to learn how to remember them - I have a song which works for me. Secondly, after writing them out we will look at how they use the verb etre (not avoir) and then the past participle.

Answered by Eloise D. • French tutor

1755 Views

Explain the difference between active transport and osmosis (3)

i. Osmosis involves the transport of water only whereas Active Transport involves the transport of molecules/ionsii. Osmosis involves the transport along the concentration gradient whereas Active transpor...

Answered by Vera O. • Biology tutor

2168 Views