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Differentiate 2x^3 - xy^2 - 4

Differentiate the first term 2x3 as normal by multiplying the coefficient of x by the power and subtracting the power by 1 to get 6x 2 . For the next term you have to use the product rule as you have two var...
EV
Answered by Elena V. • Maths tutor
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Explain Aquinas’ Natural Law Theory

Natural Law is a deontological and absolutist theory created by Thomas Aquinas: a Catholic monk, and one of the founders of the Catholic church. It’s based on Aristotle’s agent centred idea that all human be...
MD
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The length of a rectangle is five times the width. The area of the rectangle is 180cm^2. Work out the width of the rectangle.

Lets start off by calling the width of rectangle 'w'. The length of the rectangle is 5 times the width, or '5w'. The area of a rectangle can be worked out by multiplying the length by the width, i.e. 5w x w=...
HW
Answered by Hannah W. • Maths tutor
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Find the gradient of the line on which the points (1,3) and (3,4) lie and find the y-coordinate of the line at x = 7.

The gradient is m = (y1-y0)/(x1-x0) = (4-3)/(3-1) = 1/2. So the equation of the line is y= x/2 + c where c is a constant. To find the constant, c, we will input one of the given coordinates (1,3). This shows...
RL
Answered by Ryan L. • Maths tutor
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What is the difference between ionic and covalent bonding?

With ionic bonding, two ions of the opposite charge are attracted to each other to form the bond. With ionic bonding, it is the strong electrostatic force of attraction between ions. While, covalent bonding ...
SV
Answered by Shravya V. • Chemistry tutor
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