# What Is The Integral of cos^2x? (“cos Square x”)

What Is The Integral of cos^2x? this process is the reverse of finding a derivative. Integrations are the anti-derivatives. Integrations are the way of adding the parts to find the whole. Integration is the whole pizza and the slices are the differentiable functions which can be integrated. If f(x) is any function and f′(x) is its derivatives. The integration of f′(x) with respect to dx is given as ∫ f′(x) dx = f(x) + C.

There are two forms of integrals. Indefinite Integrals: It is an integral of a function when there is no limit for integration. It contains an arbitrary constant. Definite Integrals: An integral of a function with limits of integration. There are two values as the limits for the interval of integration. One is the lower limit and the other is the upper limit. It does not contain any constant of integration.

## Integral of cos^2x

We can’t just integrate cos^2(x) as it is, so we want to change it into another form, which we can easily do using trig identities.

Recall the double angle formula:

cos(2x) = cos^2(x) – sin^2(x).

We also know the trig identity

sin^2(x) + cos^2(x) = 1,

so combining these we get the equation

cos(2x) = 2cos^2(x) -1.

Now we can rearrange this to give:

cos^2(x) = (1+cos(2x))/2.

So we have an equation that gives cos^2(x) in a nicer form which we can easily integrate using the reverse chain rule.

This eventually gives us an answer of x/2 + sin(2x)/4 +c

### Integral of sin^2x cos^2x

As sin2x=2sinxcosx

sin^2xcos^2xdx=1/4(4sin^2xcos^2x)dx

1/4sin^2(2x)dx

1/41cos4x/2dx

x/818cos4xdx

x/818×sin4x/4+c

x/8sin4x/32+c

### Integral of 1/cos^2x

put 1/(cos^2x)=1/(cosx)^2

1/(cosx)^2dx

=sec2xdx

=tanx+C.

### Integral of cos^2(2x)

Use the identity:

cos2θ=1+cos2θ/2

so that:

cos2(2x)dx

=1+cos(4x)/2dx

=1/2dx+1/8cos(4x)d(4x)

=x/2+1/8sin(4x)+C

### What is the integration of Cos?

By the fundamental theorem of calculus and the fact that the derivative of sin(x) is cos(x), we have that the integral of cos(x) is sin(x) + C, where C is a constant.

### What is the derivative of cos 2x?

The derivative of cos(2x) is -2sin(2x). The process of finding this derivative uses the chain rule. We can use integrals to check our work when finding derivatives. If D(x) is the derivative of f(x), then the integral of D(x) is f(x) + C, where C is a constant.

### Why integration of Sinx is CosX?

The definite integral of the function gives the area while the indefinite integral gives the anti-derivative of the function, i.e. the function of which our given function is a derivative, and also the integral of sinx is -cosx, as the derivative of -cosx is equal to sinx.

### What is Sinh?

Sinh is the hyperbolic sine function, which is the hyperbolic analog of the Sin circular function used throughout trigonometry. It is defined for real numbers by letting be twice the area between the axis and a ray through the origin intersecting the unit hyperbola.

### What is CSC?

Cosecant (CSC) – Trigonometry function

In a right triangle, the cosecant of an angle is the length of the hypotenuse divided by the length of the opposite side.

### What is the formula for cos2x?

We use the formula cos (A +B) = cos A cos B – sin A sin B, to obtain the formulæ of cos 2x. The formulas of cos(2x) as following: Cos (2x)= 2(cosx)^2–1. Cos (2x)=1–2(sinx)^2.

### How do you find a derivative?

Basically, we can compute the derivative of f(x) using the limit definition of derivatives with the following steps:

Find f(x + h).

Plug f(x + h), f(x), and h into the limit definition of a derivative.

Simplify the difference quotient.

Take the limit, as h approaches 0, of the simplified difference quotient.

### What does sin 2x mean?

Tech Mechanical Engineering, Institute of Engineering and Management. Answered May 13, 2017. Sin x^2 is the “sine of (x-squared)”, so it is an ordinary sine function. Sin^2 x is “sine-squared of x” which is a different function from the sine function.

### What is dy dx?

There are a number of simple rules which can be used to allow us to differentiate many functions easily. If y = some function of x (in other words if y is equal to an expression containing numbers and x’s), then the derivative of y (with respect to x) is written dy/dx, pronounced “dee y by dee x”.

### What is the value of sin pi?

Simply put in the point and press the button. The value of Cos pi= -1 and Sin pi=0. The period of sin is also 2pi or 360° and its value repeats after 2pi or 360°. The range of sin is also 1 to -1 sin0°=0 sin90°=1 sin180°=0 sin270°=-1 and sin360°=0.

### How do I find the period of a function?

The period of a periodic function is the interval of x-values on which the cycle of the graph that’s repeated in both directions lies. Therefore, in the case of the basic cosine function, f(x) = cos(x), the period is 2π.

### Is Antiderivative the same as integral?

The answer that I have always seen: An integral usually has a defined limit whereas an antiderivative is usually a general case and will almost always have a +C, the constant of integration, at the end of it. This is the only difference between the two other than that they are completely the same.

### What is Sinh on the calculator?

Calculates the hyperbolic sine of a value. The hyperbolic trig functions sinh(, cosh(, and tanh( are an analog of normal trig functions, but for a hyperbola, rather than a circle. They can be expressed in terms of real powers of e, and don’t depend on the Degree or Radian mode setting.

### Is Tanh the same as inverse tan?

As indicated in other answers, tan and tanh are related to the function exp whereas arctan and artanh are related to the function log, whereby the transition from trigonometric functions to hyperbolic ones lives in the complex domain. There is the identity arcsin(tanhx)=arctan(sinhx) if that’s what you’re looking for.