Derivative of 1/sqrt(1-x^2) | Derivative of 1/sqrt(a^2-x^2)

Derivative of  $1/\sqrt{1-x^2}$ First Method: At first, we will find the derivative of 1/root(1-$x^2$) by the quotient rule of derivatives. Let us recall the quotient rule of derivatives. If $f$ and $g$ be two functions then the derivative of $f/g$ is given by the following formula: $\dfrac{d}{dx}(f/g)$ $=\dfrac{gf’ -f g’}{g^2}$ $\cdots (\star)$ Here $’$ denotes the … Read more

Derivative of square root of x^2+y^2 | Derivative of x/sqrt{x^2+y^2}

In this post, we will learn how to find the derivative of various square roots; for example, the derivatives of root(x^2+y^2), x/root(x^2+y^2) and y/root(x^2+y^2).   For more details of square roots, please visit the page Square Root of x: Definition, Symbol, Graph, Properties, Derivative, Integration. Derivative of $\sqrt{x^2+y^2}$ To find the derivative of $\sqrt{x^2+y^2}$ with respect … Read more

Derivative of root(x)+1/root(x)

Here, we will find the derivative of root x+1/root x with respect to x. In the end, we will also evaluate this derivative at x=1. For more details of square roots, please click on the page Square Root of x: Definition, Symbol, Graph, Properties, Derivative, Integration Root(x)+1/Root(x) Derivative Question: Find the derivative of $\sqrt{x}+\frac{1}{\sqrt{x}}$ Answer: At … Read more

Integration of log(sin x) from 0 to pi/2

The integration of log(sin x) from 0 to pi/2 is -π/2 log2. In this section, we will find the integral of log sinx from 0 to pi/2. The following property will be used to calculate the integral. $\int_0^af(x)dx=\int_0^af(a-x)dx$ …(i) Integral of log(sin x) from 0 to pi/2 Question: Show that $\int_0^{\frac{\pi}{2}} \log \sin x dx … Read more

Derivative of square root of sin x using first principle

In this section, we will learn how to find To answer the question, let us first know the definition of the derivative. Definition of derivative: Let $f(x)$ be a differentiable function of $x$. From first principle of by definition, the derivative of $f(x)$ is given as follows: $f'(x)=\lim\limits_{h \to 0} \dfrac{f(x+h)-f(x)}{h}$ Derivative of the Square … Read more

Solved Problems on Logarithms

In this section, we will solve problems on logarithms. For the definition of a logarithm, please click on this link. At first, we will recall the main formulas of logarithms: Formula 1:  $\log_a(MN)=\log_a M + \log_a N$ Formula 2:  $\log_a(M/N)=\log_a M – \log_a N$ Formula 3:  $\log_a M^n=n \log_a M$ Formula 4:  $\log_a M=\log_b M … Read more

Common Logarithm and Natural Logarithm

From the Introduction to logarithm, we know that the value of a logarithm is meaningless if we do not mention the base. Definition of Common Logarithm  The logarithm with base 10 is called the common logarithm. This is also known as the decimal logarithm. For example,  log105, log107 are the common logarithms of 5 and … Read more

Logarithm Formulas and Their Proofs

Here we learn the general laws of logarithms. The list of logarithm formulas are given at the end of this post. Proofs of Logarithm Formulas: Proof of Product Rule of logarithms loga(MN)=loga M + loga N Proof: Suppose that x= loga M Thus, by the definition of logarithm ax=M Again, suppose that y=loga N  ⇒ … Read more