Please capitalize where necessary: an email address so you can create a studio account
A: An email address so you can create a Studio account

Q: on the 8th of may 1936 professor christensen's coffin was carried from the church.

A: On the 8th of May 1936 Professor Christensen's coffin was carried from the church.

Q: all these medicines are used for the same indications of doctors as pamelor and are pharmaceutical analogues of this medicine.
A: All these medicines are used for the same indications of doctors as Pamelor and are pharmaceutical analogues of this medicine.

Problem: program modification: sometimes, not only virus pws:win32/coced.e or malware hs cleandisk eco but also common softwares possessing the ability to modify the inner functions of rw450ext.dll, which means other programs can't find this dll file again.
Can you repeat this sentence, but capitalize it?
Answer: Program Modification: Sometimes, not only virus PWS:Win32/Coced.E or malware HS CleanDisk Eco but also common softwares possessing the ability to modify the inner functions of RW450Ext.dll, which means other programs can't find this DLL file again.

Text: i can however say two things in my defence; first, the proof i shall give is probably not a new one; second, if my proof is new it has a certain advantage over other proofs in using only the most elementary arguments.

Correct capitalization: I can however say two things in my defence; first, the proof I shall give is probably not a new one; second, if my proof is new it has a certain advantage over other proofs in using only the most elementary arguments.

Problem: a very different text from another book
Can you repeat this sentence, but capitalize it?
Answer:
A very different text from another book