Consider the equation
a) Show that this equation is true when
b) Explain why this equation is not true when
c) Show that this equation is true for all other than
In parts (a) and (c), begin by explaining what your strategy for solving will be.
Your first instinct on Part (c) may be to manipulate the equation until both sides are equal. However, this can confuse your reader: you would be writing equations that you don't know are true! Reread your solution when you're finished. Make sure that your solution points out all of the equations that you don't know are true yet. Or try to write your solution so that every equation you write is true.
