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How to solve the absolute-value inequalities?

Absolute value means how far away you are from zero. It's better to draw a number line to understand and solve the question.

Given the inequality l 4x+3 l >15 , the distance of the 4x...

Answered by Cynthia C. • Maths tutor

9019 Views

What is Taylor Series

Technical Definition: A way to approximate (very) smooth functions (for which derivatives up to high orders exist and are continuous)

Simple Definition: Ta...

Answered by Andrew C. • Maths tutor

10644 Views

Some videos I've made

Prerequisite for addition formula: https://www.youtube.com/watch?v=iHZmi2MHqWc

Proof of formula for sin(A+B): https://www.youtube.com/watch?v=BEETggUVMrY

Proof of formula for cos(A...

Answered by Sam G. • Maths tutor

5354 Views

How do I know how many roots a quadratic equation has?

Let ax² + bx + c = 0 be the equation in question where a,b,c are real numbers with a not equal to 0 (otherwise we would not have a quadratic).

If:

Answered by Amit G. • Maths tutor

9620 Views

How do you differentiate (3x+cos(x))(2+4sin(3x))?

Here we have a product of two things, so we will be using the product rule of differentiation. This is: for y=u(x)v(x), where u(x) and v(x) are funtions of x, dy/dx = u'(x)v(x) + u(x)v'(x). So in this ...

Answered by Jaisal P. • Maths tutor

5606 Views