I changed my mind

[navi tasan]

1) What can I do to change your mind to help John.
(What can I do to change your mind and help John.)

2) I changed my mind to help him.
(I changed my mind and decided to help him.)

Are #1 and #2 correct with the given meanings?

 

[tedmc]

I think "change your mind" can be ambiguous. It could mean the speaker changing his/her mind from helping to to not helping John.

I would say:
How can I persuade you to help John?
I have decided to help him ((John).

 

[Tarheel]

1. What can I do to get you to change your mind about helping John?

2. The sentence in parentheses makes perfect sense. The other one doesn't.

In a real life situation there would be no ambiguity. Suppose I am the listener. For some reason or other, you want me to help John, but I don't want to do that. You want me to change my mind. In any case, you can't expect me to make your argument for you.

 

[Skrej]

'change your mind about helping' could be ambiguous.
'change your mind to help' suggests only persuading someone who doesn't want to help to do so.