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what is the difference between me printing off a picture from the Internet of a desert for dd's homework and me printing off the same pic to display in my house? I'm not being goady, genuinely trying to see the difference. I could say both are educational.
My answer is about living artists :
Because what your daughter clips and pastes into a book or a mood board is highly unlikely to be seen by others who think 'oh that's the finished quality of the artist’s work', where as when you put something on display those who look at it think 'that’s as good as that artist gets.'
If you’ve purchased an authorized calendar, book illustration, or similar reproduction, yes you can frame and display it because the artist has already released and been paid for it and accepted the quality of how it’s presented.
To think about it another way, if you're allowed to look at it on your computer or your phone, then why not put a tablet PC on the windowsill set to permanently display the photo directly on the website the artist has published it? You get the same result but somehow don't break copyright law. Yes because the artist is happy enough with the quality of image you’re viewing so it’s fine.
If you are going to do it anyway then be kind to the artist and stick it in your bedroom or similar. (assuming you aren't sleeping with curators and dealers. 
I’d agree with contact the artist. I’ve given away two used high quality images (of 3d pieces) that had been in displays of work, for the cost of the postage, because in both cases the people who contacted me told me why they really loved the work and couldn’t ever afford it. They were high res prints made to advertise myself and I’d rather they had them on their walls than some poor copy.