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A curve has equation 2(x^2)+3x+10. What is the gradient of the curve at x=3

Answered by Tom E. • Maths tutor

3433 Views

In an economy consumption=50, investment=60, government spending=160, imports=60 and exports=40. What is the aggregate demand of the economy

₂₅₀

Answered by Tom E. • Economics tutor

1595 Views

A curve has equations: x=2sin(t) and y=1-cos(2t). Find dy/dx at the point where t=pi/6

Since this question concerns parametric's, one may move to eliminate t from the equation to calculate dy/dx directly. However, in this case it is much easier to use the chain rule and realise that dy/dx=d...

Answered by Cameron H. • Maths tutor

5237 Views

Polyester is a common polymer used in clothing. State the name of the chemical reaction used to form polyester by reaction of ethanedioic acid and ethane-1,2-diol. Give the name of the molecule which is lost upon condensation of these two molecules.

Name of reaction is condensation polymerisation.Water is lost upon condensation of ethanedioic acid and ethane-1,2-diol (will draw this out on the whiteboard).

Answered by Melissa W. • Chemistry tutor

3416 Views

Vous décrivez là où vous habitez pour votre blog. Décrivez ...

In order to gain 10 out of 10 for the "content" side of this question, there are certain things a student must do. I would say the easiest way to gain a marker's confidence is responding to all ...

Answered by Saoirse G. • French tutor

2435 Views