Q42: Two electrical resistors with resistances R<sub>1</sub> and
Q43: Show that the function <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB2342/.jpg" alt="Show
Q44: Compute the directional derivative of <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB2342/.jpg"
Q45: Compute the indicated limit. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB2342/.jpg" alt="Compute
Q46: Locate all critical points and classify them.
Q48: Find the indicated partial derivatives. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB2342/.jpg"
Q49: Find the gradient of the given function
Q50: Find the indicated partial derivative. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB2342/.jpg"
Q51: Find the total differential of <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB2342/.jpg"
Q52: Find the gradient of the given function.