Assertion (A): The stirrer facilitates the even mixing of oxygen availability in a bioreactor.
Reason (R): Stirred-tank bioreactors generally have a flat base.}
- The stirrer ensures uniform oxygen and nutrient mixing, promoting optimal growth conditions.
- The flat base is unrelated to oxygen mixing; it provides stability to the bioreactor.
If vector \( \mathbf{a} = 3 \hat{i} + 2 \hat{j} - \hat{k} \) \text{ and } \( \mathbf{b} = \hat{i} - \hat{j} + \hat{k} \), then which of the following is correct?