1. Use (11.20) to check whether the following functions are concave, convex, strictly con- cave, strictly convex, or neither: (a) z = x? (b) z = x}+ 2x3 (c) z= 2x2-xy + y? following functions are concave, convex.

Q: 6+w=4

A: The give equation is 6 + w = 4To find the value of w.

Q: 4x; x = 8?

A: Find 4x if x= 8?

Q: Solve. m =n/2-n  for n

A:

Q: John does five push-ups on the first day of a 30 day month and then increases the number of push-ups…

A:

Q: -5.4 + 9.5

A:

Q: Solve. 3c9-18c2 81c

A: topic - cubic polynomial

Q: Solve. x2-7x+10=0

A: We will solve this by factorization.

Q: S is 4 years older than J. 8 years ago, s was twice as old than J. What are the ages of S & J?

A: Let the age of S be x years, then the age of J is (x - 4) years, because S is 4 years older than J.

Q: Ive. 9*1 =275x-1

A: If bases are equal then automatically powers must be equal in order to satisfy an equation

Q: |2х +3 3 13

A:

Q: 19 17 31

A: topic - Pythagoras theorem and algebraic operations  note: As per bartleby guidelines, we are…

Q: Solve for x. 6 X+ 4) 12

A:

Q: x+2x-3 =0

A: It is given that,        x23+2x13-3=0we have to find the value of x.

Q: Solve for x. x 6 4 3 x 0 = 132 4 5 - 4

A: We will solve the determinant in terms of X and then equate it to 132.

Q: 11+2x=31

A: