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How do you know when to integrate by parts?

This is usually a good idea if you have an integral with two functions multiplied together when one of the functions differentiates to a constant (could take more than one differentiation).For example to ...

Answered by Dominic H. • Maths tutor

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What is a phospholipid and how does it form part of the cell membrane?

The cell membrane is a complex material made up of three main components: the phospholipid bilayer, proteins, and cholesterol. The tadpole-shaped phospholipid is made up of a phosphate head attached to a ...

Answered by Joseph C. • Biology tutor

3826 Views

Propane and Chlorine react in the presence of UV light to give 2-chloropropane and HCl. Estimate the enthalpy change of this reaction using the following bond enthaplies (KJ/mol) : C-H=+413, Cl-Cl=+243, C-Cl=+346 and H-Cl=+432.

Write equation, ensuring both sides are balanced.CH₃CH₂CH₃+ Cl₂→ CH₃CH(Cl)CH₃+ HCl (2.) Draw structural formula of all reactants ...

Answered by Jasmine W. • Chemistry tutor

32312 Views

Where does the circle (x-6)^2+(y-7)^2=4 intersect with y=x+3

Where does the circle (x-6)²+(y-7)²=4 intersect with y=x+3We need to sub y=x+3 into the circle equation giving us an equation in just x:(x-6)²+(x-4)²=4Next we e...

Answered by Nicola L. • Maths tutor

3275 Views

dh/dt = (6-h)/20. When t=0, h=1. Show that t=20ln(5/(6-h))

Part 1: This question requires us to first do some rearranging. The right hand side of the equation is in terms of h, and we are looking to find t in terms of h, so it won't be appropriate to simply integ...

Answered by Linetta A. • Maths tutor

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