Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Relativity without equations is worthless

Any equation with a square root or division is display as a really small picture.Resizing the text has no effect on the equations which seem to get smaller later in the book till by 33% I had to give up because even with a magnifing glass the pictures were so light and resolution at that small size so bad that I could not read them at all.A book on Relativity without readable equations makes the book not even worth a penny.