Can you use bounds in 3u (2 Viewers)

[erucibon]

For motion questions and similar, can you use bounds to integrate or do you have to sub initial values?
Also, can you put expressions into the 'd' instead of using substitutions in 3u?

 

[Nav123]

For motion questions and similar, can you use bounds to integrate or do you have to sub initial values?
Also, can you put expressions into the 'd' instead of using substitutions in 3u?

It was perfectly ok (and even encouraged) to use bounds in the old syllabus and i'll assume it is too for the new syllabus . Not sure what you mean for the second question you will have to give an example or clarify.

 

[Nav123]

i think they mean something like integral of x^2 d(x^2), as opposed to the integral of u du. Should be fine.

Oh yep thats perfectly fine, unless the question specifically states use the substitution u=... in which case you have to use that substitution.