Error function help

vtnsx

i've been trying to prove this question, but so far, there is no successs...
http://members.shaw.ca/brian103/theerrorfunction.jpg

Tide

Does this help?

[tex]\int_a^b = \int_a^0+ \int_0^b[/tex]

[tex]\frac {d}{dx} \int_0^x f(x') dx' = f(x)[/tex]

ehild

a. Use the additive property of definite integral.

[tex]\int _0^bf(t)dt=\int_0^af(t)dt+\int_a^bf(t)dt [/tex]

b. Remember that the differential quotient of definite integral with respect to the upper bound is the integrand itself.

[tex] \big[\int _0^xf(t)dt\big]' = f(x)[/tex]


ehild