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Explain why for any constant a, if y = a^x then dy/dx = a^x(ln(a))

So let's start with taking the natural log on both sides of y=ax, giving us ln(y) = ln(ax). Using the laws of logarithms we can write this as ln(y) = xln(a).Next, we differentiate bo...

JM
Answered by James M. Maths tutor
11213 Views

How do I answer the question 'Why do you want to study medicine?'

This is a common question asked during many medical school interviews. The common answers may include ' I want to help people' or 'I love learning about the human body' - which, despite sounding cliché, a...

JS
1859 Views

Can you explain the bond angle and shape of the molecule NH3?

In NH3, the nitrogen atom is bonded to three hydrogen atoms. By drawing the Lewis structure, the central nitrogen atom shows 3 covalent bonds to hydrogen and one lone pair. Valence Shell Electron Pair Rep...

JJ
Answered by Jenny J. Chemistry tutor
14016 Views

How should I prepare for an Oxbridge interview?

Vying away from the simple 'be yourself' or 'be passionate about your subject' which are both terribly vague and difficult concepts to teach, the simplest and best secret I can give to anyone applying for...

LB
1542 Views

Find the coordinates and determine the nature of the stationary points of curve y=(2/3)x^3+2x^2-6x+3

  1. Stationary points occur when dy/dx=0, therefore determine dy/dx first:
    dy/dx= 2x2 + 4x - 6
    2) solve dy/dx=0 for two values of x (using quadratic formula, if necessary):
    (x+...
BV
Answered by Barbora V. Maths tutor
3110 Views

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