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Prove that the d(tan(x))/dx is equal to sec^2(x).

You can express tan(x) as sin(x)/cos(x). Therefore, tan(x)= sin(x)/ cos(x)The quotient rule can be applied here as there is a function of x in the numerator and denominator.Quotient Rule: (v*(du/dx) - u*(...

Answered by Chinazam U. • Maths tutor

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Describe the processes involved in protein production within a cell

First, DNA-helicase (an enzyme) separates the two strands of DNA to allow RNA polymerase (another enzyme) to produce messenger RNA (mRNA) from free nucleotides, coded for by a gene in the DNA. The mRNA...

Answered by Oisin B. • Biology tutor

2833 Views

What is the general rule for differentiation?

In differentiation you multiply the coefficient of the subject (what the value is multiplied by e.g. 3 is the coefficient of 3x⁶) by its exponent (the power that the value is raised to e.g. ...

Answered by Oisin B. • Maths tutor

4261 Views

Outline and evaluate the cognitive model of abnormality

The cognitive approach states that the root of abnormality is faulty thought processes.
According to Beck, these take the form of negative thoughts about oneself, negative expectations of the future ...

Answered by Dorothea C. • Psychology tutor

12608 Views

What's the best technique for writing an introduction to an essay?

Introductions are a key part of any good essay as this is the first taste the marker is going to get for what your essay is about. There are a few key things to remember when writing an Introduction. Firs...

Answered by Oliver E. • Politics tutor

3590 Views