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When do you know to use integration by parts?

You use integration by parts if there's more than one function of x. For example; to integrate x sin(x) you'd use integration by parts as this is two functions of x. The formula to remember is I(udv) = uv - ...
NL
Answered by Natasha L. • Maths tutor
4309 Views

When should I use the present subjunctive and the present indicative?

The present indicative means what you (or whoever the verb is talking about) is doing right now. There is no doubt about it, you are simply indicating it. For example; "I drive," "you make&quo...
LM
Answered by Lauren M. • Spanish tutor
3265 Views

Give a few examples of when you would use the imperfect tense?

In Spanish the imperfect tense is used for: describing how things/people were in the past: e.g hacía calor =it was hot era cansada = I was tired To describe a regular action that used to happen in the past e...
BK
Answered by Bethan K. • Spanish tutor
3286 Views

What is the molar concentration of a solution of pure water?

Concentration (mol/dm 3 ) = (density (g/dm 3 )) / (molecular mass (g/mol)) The density of water = 1000 g/dm 3 The molecular mass of H 2 O = (2 1 g/mol) + (1 16 g/mol) = 18 g/mol Concentration mol/dm 3 = 1000...
JD
21033 Views

How does Thomas Hardy create feelings of loss and regret in the poem 'Neutral Tones?'

Depicting a sad ending to a relationship, Hardy employs multiple literary techniques in order to powerfully convey feelings of loss and regret in 'Neutral Tones'. In particular, use of monochromatic imagery ...
IR
12821 Views