Integral of [1/(sin x cos x) dx] (substitute sin2 x + cos2 x for 1)= Integral of [(sin2 x + cos2 x)/(sin x cos x) dx]= Integral of [sin2 x/(sin x cos x) dx] + Integral of [cos2 x/(sin x cos x) dx]= Integral of (sin x/cos x dx) + Integral of (cos x/sin x dx)= Integral of tan x dx + Integral of cot x dx= ln |sec x| + ln |sin x| + C
-cos(x) + constant
The Integral diverges. It has singularities whenever sin(x)+cos(x)=0. Singularities do not necessarily imply that the integral goes to infinity, but that is the case here, since the indefinite integral is x/2 + 1/2 Log[-Cos[x] - Sin[x]]. Obviously this diverges when evaluated at zero and 2pi.
.5(x-sin(x)cos(x))+c
The integral of sin x2 is one of the Fresnel Integrals. It does not have a closed form solution. However, you can calculate a series solution by integrating the Taylor series, as follows: The Taylor series expansion about x = 0 for sin x is sin x = x - (x3/3!) + (x5/5!) - (x7/7!) +/- ... Substitution of x2 for x yields sinx2 = x2 - (x6/3!) + (x10/5!) - (x14/7!) +/- ... Term-wise integration, using the power rule gives {integral}sinx2 = (x3/3) - (x7/7*3!) + (x11/11*5!) - (x15/15*7!) +/- ... This is the answer. It is the Fresnel Integral S(x). There is a similar one for the integral of cos x2, called C(x). It can be written in more compact form: S(x) = (Sum from n = 1 to infinity) of (-1)n x4n+3/(4n+3)*(2n+1)! It looks better in Sigma notation, with fractions, but if you work out the first 4 terms, you will see agreement with the result for integrating the series expansion. Here is a link to Fresnel Integral on Wikipedia: http://en.wikipedia.org/wiki/Fresnel_integral Thank you for posing this question.
sin integral is -cos This is so because the derivative of cos x = -sin x
Integral of [1/(sin x cos x) dx] (substitute sin2 x + cos2 x for 1)= Integral of [(sin2 x + cos2 x)/(sin x cos x) dx]= Integral of [sin2 x/(sin x cos x) dx] + Integral of [cos2 x/(sin x cos x) dx]= Integral of (sin x/cos x dx) + Integral of (cos x/sin x dx)= Integral of tan x dx + Integral of cot x dx= ln |sec x| + ln |sin x| + C
-cos x + Constant
The integral of cosine cubed is sinx- 1/3 sin cubed x + c
sin2x + c
The indefinite integral of sin 2x is -cos 2x / 2 + C, where C is any constant.
(1/8)(x-sin 4x)
if you are studying a (simple) wave described by: x = A sin(kt) then A = amplitude
-cos(x) + constant
- cos(1 - X) + C
∫ cos(x) dx = -sin(x) + C
The integral of x cos(x) dx is cos(x) + x sin(x) + C