Watch this video to learn about the rules of surds. For example, \(\sqrt 4 = 2\) is not a surd. However \(\sqrt 5\) is a surd. If you use a calculator, you will see that \(\sqrt 5 = 2.236067977...\) ...

Rationalising an expression means getting rid of any surds from the bottom (denominator) of fractions. Usually when you are asked to simplify an expression it means you should also rationalise it.

Daniel Liberto is a journalist with over 10 years of experience working with publications such as the Financial Times, The Independent, and Investors Chronicle. David Kindness is a Certified Public ...

Peter Gratton, Ph.D., is a New Orleans-based editor and professor with over 20 years of experience in investing, risk management, and public policy. Peter began covering markets at Multex (Reuters) ...

9. Myocardial Infarction Associated With Percutaneous Coronary Intervention (Type 4a Myocardial Infarction) e629 10. Stent/Scaffold Thrombosis Associated With Percutaneous Coronary Intervention (Type ...

Abstract: This paper describes a capacitive-gain amplifier (CGA) with common-mode (CM) sampling (CMS) and switched-capacitor driving capability. The CMS CGA defines the amplifier CM voltage in a ...

Aortic stenosis is the most common valvular disease requiring valve replacement. Valve replacement therapies have undergone progressive evolution since the 1960s. Over the last 20 years, transcatheter ...

Dementia affects memory, thinking, behavior, or emotions, interfering with daily life. Alzheimer's disease is the most common type of dementia, making up 60% to 80% of cases. Other types of dementia ...

Obesity is a chronic disease diagnosed when a person's BMI is 30 or higher. Obesity increases the risk of health issues like heart disease, type 2 diabetes, and high blood pressure. BMI is a common ...