Determine the appropriate rotation formulas to use so that the new equation contains no xy-term.x2 + 2xy + y2 - 8 = 0

A. x = -y' and y = x'
B. x = x' - y' and y = x' + y'
C. x = (x' - y') and y = (x' + y')
D. x = x' -  y' and y = x' + y'

Answer: C

Mathematics

You might also like to view...

Divide.(-16.6708) ÷ (-2.84)

A. 2.84 B. 5.87 C. -5.87 D. -2.84

View
Mathematics

Graph.y ? 

A.

B.

C.

D.

View
Mathematics

Simplify.i4

A. 1 B. i C. -i D. -1

View
Mathematics

Find the exact value of the expression.cos 

A.
B. -( - 1)
C. ( - 1)
D. - 

View
Mathematics