if you are integrating with respect to x, the indefinite integral of 1 is just x
The 3s would cancel and it would become the integral of 1/x which is ln x.
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Since you did not specify any limits of integration, I assume you are looking for the indefinite integral of this expression: tan2(x)cos5(x) with respect to x (dx). Using the following identity: tan(x) = sin(x) / cos(x) The original expression can be rewritten as: (sin2(x) / cos2(x))cos5(x) Which further simplifies to: sin2(x)cos3(x) Which can be expanded to: sin2(x)cos2(x)cos(x) Using the identity: sin2(x) + cos2(x) = 1 which implies: cos2(x) = 1 - sin2(x) which makes the expression from above able to be simplified into: sin2(x)(1 - sin2(x))cos(x) From here, you can use u-substitution by using the substitution: u = sin(x) du = cos(x) dx => dx = du/cos(x) So after u substitution: int(sin2(x)(1 - sin2(x))cos(x)) dx becomes: int(u2(1-u2)) du int(u2-u4) du From here, elementary antiderivatives can be used: anti(u2) = (1/3)(u3) anti(u4) = (1/5)(u5) which yields a final indefinite integral in u of: (1/3)u3-(1/5)u5 + C where C is the constant of integration (since this is an indefinite integral). Back-substituting with the u-substitution from before (u=sin(x)), the final indefinite integral in x is: (1/3)sin3(x) - (1/5)sin5(x) + C
By antiderivative do you mean integral? If yes, integral x^1 dx= (x^2)/2
The answer will depend on what "Li of x" means.
if you are integrating with respect to x, the indefinite integral of 1 is just x
The indefinite integral of (1/x^2)*dx is -1/x+C.
x/(x+1) = 1 - 1/(x + 1), so the antiderivative (or indefinite integral) is x + ln |x + 1| + C,
For it to be a definite integral, you would need to specify a range. We can however give you the indefinite integral. The easiest way to do this is to think of it not as a fraction, but as a negative exponent: 1/x2 = x-2 It then becomes quite easy to integrate, as we can say in general: ∫(axn) dx = ax(n + 1) / (n + 1) + C In this case then, we have: ∫(x-2) dx = -x-1 + C, or -1/x + C
In order to evaluate a definite integral first find the indefinite integral. Then subtract the integral evaluated at the bottom number (usually the left endpoint) from the integral evaluated at the top number (usually the right endpoint). For example, if I wanted the integral of x from 1 to 2 (written with 1 on the bottom and 2 on the top) I would first evaluate the integral: the integral of x is (x^2)/2 Then I would subtract the integral evaluated at 1 from the integral evaluated at 2: (2^2)/2-(1^2)/2 = 2-1/2 =3/2.
S 2/x d/x bring the constant 2 out in front of the sign of integration 2 S 1/x dx you should know the integration of 1/x 2*ln(x) + C
ln |x|+C is the answer
arctan(x)
The 3s would cancel and it would become the integral of 1/x which is ln x.
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.
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