H hello-there Member Joined Jan 20, 2010 Messages 117 Gender Male HSC 2010 Apr 8, 2010 #21 shaon0 said: I=S e^(1/x)/x^2 dx =-e^(1/x)+C Click to expand... nice but how did you do it? also how do you integrate Square troot x e^(xrootx) Last edited: Apr 8, 2010
shaon0 said: I=S e^(1/x)/x^2 dx =-e^(1/x)+C Click to expand... nice but how did you do it? also how do you integrate Square troot x e^(xrootx)
N nikkifc Member Joined Apr 8, 2010 Messages 70 Gender Female HSC 2010 Apr 8, 2010 #22 hello-there said: also i got another question by its integration how do you integrate Click to expand... Let u=1/x du/dx = -1/x^2
hello-there said: also i got another question by its integration how do you integrate Click to expand... Let u=1/x du/dx = -1/x^2
tommykins i am number -e^i*pi Joined Feb 18, 2007 Messages 5,730 Gender Male HSC 2008 Apr 8, 2010 #23 hello-there said: also i got another question by its integration how do you integrate Click to expand...
hello-there said: also i got another question by its integration how do you integrate Click to expand...
shaon0 ... Joined Mar 26, 2008 Messages 2,029 Location Guess Gender Male HSC 2009 Apr 8, 2010 #24 hello-there said: nice but how did you do it? also how do you integrate Square troot x e^(xrootx) Click to expand... I= S sqrt(x)e^(xsqrt(x)) dx = S sqrt(x)e^(x^(3/2)) dx Let u=x^(3/2):du=3/2 x^(1/2) dx I= 2/3 S e^u du =2/3 e^u +C =2/3 e^(xsqrt(x)) +C
hello-there said: nice but how did you do it? also how do you integrate Square troot x e^(xrootx) Click to expand... I= S sqrt(x)e^(xsqrt(x)) dx = S sqrt(x)e^(x^(3/2)) dx Let u=x^(3/2):du=3/2 x^(1/2) dx I= 2/3 S e^u du =2/3 e^u +C =2/3 e^(xsqrt(x)) +C