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How do I make sure that each paragraph in my essay answers the question?

Under the timed pressure of an exam it can be tempting to launch straight into writing an answer to a question without taking time to analyse what is being asked and planning to ensure that each point you ma...
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Answered by Eleanor R. • English tutor
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Find the an expression for dy/dx of the function y=(4x+1)ln(3x+1) and the gradient at the point x=1.

This question is example of product rule. To simplify need to define two terms u=4x+1 and v=ln(3x+1). Each term is then differentiated. du/dx=4. To differentiate v, need to define another term a=3x+1, theref...
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Answered by William S. • Maths tutor
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A curve has the equation x^2 +2x(y)^2 + y =4 . Find the expression dy/dx in terms of x and y [6]

Integrate each term in terms of x, then integrate each term in terms of y Make sure you state in what form you are integrating. Remember if you are integration in terms of y, the x values are constants and v...
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Answered by Lavana C. • Maths tutor
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How does the electronegativity of the halogen atom change as group 7 is descended?

Electronegativity is the measure of how strongly an atom attracts a bonding pair of electrons to itself. As group 7 is descended, the electronegativity decreases. This is because the size of the halogen atom...
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Answered by Serene T. • Chemistry tutor
20677 Views

Describe the difference in melting points for the elements Sodium and Magnesium

With these sort of questions, it's important to firstly think about what type of bonds make up the structure of the element. For this example, they both have metallic bonds which hold the structures together...
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Answered by Myles S. • Chemistry tutor
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