## Which trigonometric functions is an odd function?

We’re now ready to look at **sine** and cosine as functions. Sine is an odd function, and cosine is an even function.

## Is TANX function odd?

The function tanx **is also an odd function**, but on a slightly restricted domain: all reals except the odd multiples of π2. The functions f(x)=ex and g(x)=logex are neither odd nor even functions.

## Is Sinx an even function?

By definition, a function f is even if f(−x)=f(x) . Since sin(−x)=−sinx , it implies that sinx **is an odd function**.

## Which of the 6 trig functions can be undefined?

First, the the secant, cosecant, and cotangent functions are the reciprocals of the cosine, sine, and tangent functions, respectively. Second, **there is no value for which the cosine and sine functions are undefined**. This is because r is the distant from the origin to the point (x,y) ≠ (0,0) on the terminal ray.

## Is YX TANX odd or even?

Because **y=tanx is an odd function**, we see the corresponding table of negative values in the table below. We can see that, as x approaches −π2 , the outputs get smaller and smaller. Remember that there are some values of x for which cos x = 0. For example, cos(π2)=0 ( π 2 ) = 0 and cos(3π2)=0 ( 3 π 2 ) = 0 .

## Is sin2x even or odd?

sin 2x is an **odd function**.

## Which trig functions are continuous?

The **function sin(x)** is continuous everywhere. The function cos(x) is continuous everywhere. The function y = cot(x) has the set { x x ̸= kπ k = 0, ±1, ±2, ….. } as its domain. x x ̸= (2k + 1)π 2 k = 0, ±1, ±2, ….. }

## What are the six trig functions?

There are six functions of an angle commonly used in trigonometry. Their names and abbreviations are **sine (sin), cosine (cos), tangent (tan), cotangent (cot), secant (sec), and cosecant (csc)**.

## Why tan 270 is undefined?

In quadrant four, we go from 0 to 1 and are therefore still increasing. At zero degrees this tangent length will be zero. Hence, tan(0)=0. … At 270 degrees we again have an undefined (und) result **because we cannot divide by zero.**.

## Is Lnx continuous?

The function lnx is differentiable and **continuous** on its domain (0,с), and its derivative is d dx lnx = 1 x . function is continuous, therefore lnx is continuous.

## Is cos a continuous function?

CONTINUITY OF TRIGONOMETRIC FUNCTIONS

Thus, sin x and cos x **are continuous at the arbitrary point c**; that is, these functions are con- tinuous everywhere.

## How do you know if a trig function is continuous?

## Is ln1 continuous?

The function ln**(x) is continuous** and differentiable for all x>0 . Therefore, 1ln(x) will be continuous and differentiable for all such values of x as well, except for those values of x where ln(x)=0 . The only such value of x where the logarithm is zero is x=1 .

## Is COTX continuous?

cot(x) **is continuous at every point of its domain**. So it is a continuous function.

## Is Arctan continuous?

As such, **arctan is continuous**. The function arctan(x) is the inverse function of tan(x):I=(−π/2,π/2)→R.

## Is LOGX continuous function?

Theorem 8.1 log x is defined for all x > 0. It is everywhere differentiable, hence **continuous**, and is a 1-1 function. The Range of log x is (−∞, ∞).

## Are logs continuous?

Definition: Continuity A function **f is continuous if it is continuous at every point in its domain**. … For instance, the natural logarithm ln(x) is only defined for x > 0. This means that the natural logarithm cannot be continuous if its domain is the real numbers, because it is not defined for all real numbers.

## Is Lnx always positive?

The outside function is ln x, and we know that to be in the domain of **ln x, x must be a positive number**. This tells us that the only x which can be in the domain of ln(x2) are those for which x2 is a positive number. The function x2 is positive as long as x = 0, so we get that Dom(h) = {x ∈ R : x = 0}.

## Is a radical function continuous?

The square root acting on the **real numbers is continuous everywhere on the interval**. When extended to the complex plane, it is continuous everywhere except at zero, but gives two values for every input (positive and negative root in the case of the real numbers).

## What does Rolles theorem say?

Rolle’s theorem, in analysis, special case of the mean-value theorem of differential calculus. Rolle’s theorem states that if a function f is continuous on the closed interval [a, b] and differentiable on the open interval (a, b) such that f(a) = f(b), then f′(x) = 0 for some x with a ≤ x ≤ b.

## Is exponential function continuous?

**Exponential functions are always continuous** because they are always differentiable and continuity is a necessary (but not sufficient) condition for differentiability.

## Are cubic functions continuous?

The graph of a cubic function has no jumps or holes. **The function is continuous**.