In this document:
http://ocw.mit.edu/courses/mathematics/18-01sc-single-variable-calculus-fall-2010/part-a-definition-and-basic-rules/session-9-product-rule/MIT18_01SCF10_ex09sol.pdf

Shouldnt it be:
When f(x) is differentiable when a=21 and b=-7 (p.3, last sentence)

Question

In this document:
http://ocw.mit.edu/courses/mathematics/18-01sc-single-variable-calculus-fall-2010/part-a-definition-and-basic-rules/session-9-product-rule/MIT18_01SCF10_ex09sol.pdf

Shouldnt it be:
When f(x) is differentiable when a=21 and b=-7 (p.3, last sentence)

datanewb · Answer

Yes, that is a typo.  Good catch.  Too bad it's not like Wiki so that we could edit the document ourselves.

anonymous · Answer

Thanks for that!