Conjoint Analysis Example. What is U1(X1) at in-between points, say at X1 = 5.5?

You are on a cycling trip around europe with friends. you check the weather forecast for the first week. these are the temperatures for the week. sun mon tues wed thurs fri sat 16°c 20°c 24°c 28°c 28°c 23°c 15°c what is the mean temperature forecast for the week?

What can you determine about the solutions of this system

Iwill give you ! what is the measure of ∠v ?