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How do you find the turning point of a parabola using its equation? using its equation?

First, you have to differentiate the equation to find the first derivative. Once you do this, you then set the derivative to equal zero and find the corresponding x value. This number is the x-value of the c...
IY
Answered by Ifeoluwa Y. • Maths tutor
4059 Views

Describe and evaluate the types of long term memory.

Long-term memory can be separated into qualitatively different types: episodic, semantic, and procedural memory. Episodic memory is the memory of specific events, such as what you ate for breakfast, or the e...
LC
Answered by Leah C. • Psychology tutor
37015 Views

How do I get better at managing my time in the exam?

The best way to improve your time management for history exams is to develop a system that works for you and then practise it doing timed past papers. i.e. If the exam is two hours long and you have to answe...
EM
Answered by Emily M. • History tutor
5195 Views

Express 4x/(x^2-9) - 2/(x+3) as a single fraction in its simplest form.

To satisfy the condition of substracting two fractions with unlike denominators, a common denominator needs to be found. By recognizing x^2 - 9 = (x-3)(x+3), we can rewrite the question as 4x/(x-3)(x+3) - [2...
YC
Answered by Ye C. • Maths tutor
6977 Views

Show that r^2(r + 1)^2 - r^2(r - 1)^2 ≡ 4r^3.

Start with the left hand side (LHS) of the equation. r^2(r + 1)^2 - r^2(r - 1)^2Take the equivalent terms from the separate parts of the LHS outside of set of brackets.r^2[(r + 1)^2 - (r - 1)^2]Expand the in...
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Answered by Andrew D. • Maths tutor
7983 Views