calculus stewart
posted by fanny .
Evaluate the integral
Int 7x ln(5x) dx

it should help to know that integral (x lnx) = 1/4 x^2 (2lnx  1)
Respond to this Question
Similar Questions

Calculus  Center of Mass
Find the exact coordinates of the centroid given the curves: y = 1/x, y = 0, x = 1, x = 2. X = 1/Area*Integral from a to b: x*f(x)dx Y = 1/Area*Integral from a to b: [(1/2)*(f(x))^2]dx How do I find the area for this? 
Calculus
Evaluate the integral by interpreting it in terms of areas as 0 goes to 12 2x  7dx? 
Calculus
int(dx/(x^2+9)) u = x/3 Use the indicated substitution (above) to evaluate the integral. Confirm answer by differentiation. Okay, so I found that du/dx is 1/3. dx is 3du. Just by looking at the integral I can tell this is some form … 
Calculus
Evaluate the integral INT(x^4+6x^3+5x^2+8)/(x^2+6x+5)dx Please help. 
Calculus
Evaluate the indefinite integral: INT dx/(64+x^2)^2 
Calculus
Evaluate the indefinite integral of InT(x^3+9x^23x+2)/(x^42x^3) I got ((12x)/(2x^2))+3*ln(2x)4*ln(x) but apparently that's not the answer... 
Calculus
Evaluate the indefinite integral of InT(x^3+9x^23x+2)/(x^42x^3) I got ((12x)/(2x^2))+3*ln(2x)4*ln(x)+c but apparently that's not the answer... and I don't know why. 
Calculus
Evaluate the indefinite integral of InT(x^3+9x^23x+2)/(x^42x^3) I got ((12x)/(2x^2))+3*ln(2x)4*ln(x)+c but apparently that's not the answer... and I don't know why. 
Calculus
Evaluate the integral: 16csc(x) dx from pi/2 to pi (and determine if it is convergent or divergent). I know how to find the indefinite integral of csc(x) dx, but I do not know how to evaluate the improper integral. 
calculus
use symmetry to evaluate the double integral (1+x^2siny+y^2sinx)dA, R=[pi,pi]x[pi,pi]. let g(x) and h(y) be two functions: int(c to d)int(a to b)(g(x,y)+h(x,y))dxdy=int(c to d)int(a to b)g(x,y)dxdy+int(c to d)int(a to b)h(x,y)dxdy