Inline mathematical expressions in Mastering Algorithms with Perl are tiny

I just recently purchased Mastering Algorithms with Perl and when I read the epub version on my iPad with iBooks, almost all of the mathematical expressions are excruciatingly tiny.

The block expressions (Chapter 1, Benchmarking) are nice and large, but the inline ones (Chapter 1, Temporary Variables) are too small to read.

Is this just a problem with the epub/iBooks combination, or is this more widespread? And can it be fixed?
1 person has
this problem