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Find the derivative of sinx, use that to find the derivative of xsinx

the derivative of sinx is cosx, then we know that we can apply the product rule to find derivative of xsinx, such that if we let u=x and v=sinx and apply the formula d/dx(xsinx)=u dv/dx+v du/dx. to obtain xc...
NB
Answered by Niren B. • Maths tutor
5073 Views

Explain the law of supply and demand and why it is important.

The law of supply and demand is one of the fundamental concepts of basic economics. It is the foundation on which several economic theories have been built. The law of demand states the higher the price of a...
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Answered by Adriana G. • Economics tutor
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How do you explain the change in membrane permeability as temperature increases?

Generally, increasing the temperature increases membrane permeability. At temperatures below 0 o C the phospholipids in the membrane don't have much energy and so they can't move much, which means that they'...
EF
Answered by Ella F. • Biology tutor
69469 Views

Solve the simultaneous equations. 3x + 5y = 1 , 2x - 3y = 7

3x + 5y = 1 (eq 1) 2x - 3y = 7 (eq 2) Step 1 - 2* (eq 1) 6x + 10y = 2 (eq 3) Step 2 - 3* (eq 2) 6x - 9y = 21 (eq 4) Step 3 - eq 4 - eq 3 to cancel the x -19y = 19 Therefore, y = -1 (eq 5) Step 4 - sub (eq 5)...
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Answered by Ann L. • Maths tutor
15112 Views

How do you go about answering titration equations?

First you need write out the balanced chemical equation. You will often be asked about iron(II) ions reacting with maganate(VII) ions or with dichromate ions, therefore it is easiest to learn these two equat...
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Answered by Ella F. • Chemistry tutor
2901 Views