Integration: int[1,2](2x+sin(x))dx, int((2x^3-1)(2x^4-4x+5)^4)dx, ...

[Kevinklb]

Can anyone check to see if I got 12 marks to pass this ?

 

[Kevinklb]

Rest are shown below

 

[Kevinklb]

this is the first question anwser

 

[blamocur]

The rules of the forum say to start a new thread for each exercise.

this is the first question anwser

A 240x320 image of a whole page of writing cannot be readable. But I've noticed in your previous post that you have problems with signs when integrating [imath]x \sin x[/imath] by parts.

 

[blamocur]

The rules of the forum say to start a new thread for each exercise.

A 240x320 image of a whole page of writing cannot be readable. But I've noticed in your previous post that you have problems with signs when integrating [imath]x \sin x[/imath] by parts.

Oops, the signs look right; my mistake, not yours -- sorry

 

[blamocur]

... but in your first post the numerical answer is still incorrect. I cannot understand the computations in the last two lines of your writing, but the result looks wrong to me.

 

[Steven G]

check to see if I got 12 marks

If we don't know the point value of all the problems, how can we figure out if you earned 12 points.