1. Evaluate 2. lim χ→0 [((χ+1)^1/3) -1] / χ 3. The hint is [a^2 + b^2 = (a+b)(a^2 + ab + b^2)]. But i don't get it how can that help me solve this because it is a cube root and not to the power of 3. Without thinking about the hint, I have attempted it and i think it is undefined for the function. Say f(x) is the function, so f(0) is undefined making the limit as x approaches 0 undefined as well. is it correct??