Spot the odd one out

Exercise and reference answers

Questions

1. Items

   1. Differentiable implies continuous
   2. Continuous implies differentiable
   3. Continuity is weaker

   Odd item

   Continuous implies differentiable

2. Items

   1. Sum
   2. Product
   3. Composite

   Odd item

   Composite

3. Items

   1. Derivative exists
   2. Defined at the point
   3. Limit exists

   Odd item

   Derivative exists

Explanation