Math  /  Algebra

QuestionEvaluate the function at the specified points. f(x,y)=y+xy2,(2,4),(3,2),(5,4)f(x, y)=y+x y^{2},(-2,4),(-3,-2),(-5,4)
At (2,4)(-2,4) : \square At (3,2)(-3,-2) : \square At (5,4)(-5,4) : \square Submit answer Next item

Studdy Solution

STEP 1

1. We are given the function f(x,y)=y+xy2 f(x, y) = y + xy^2 .
2. We need to evaluate this function at three specified points: (2,4)(-2, 4), (3,2)(-3, -2), and (5,4)(-5, 4).

STEP 2

1. Substitute the first point (2,4)(-2, 4) into the function and evaluate.
2. Substitute the second point (3,2)(-3, -2) into the function and evaluate.
3. Substitute the third point (5,4)(-5, 4) into the function and evaluate.

STEP 3

Substitute x=2 x = -2 and y=4 y = 4 into the function f(x,y)=y+xy2 f(x, y) = y + xy^2 :
f(2,4)=4+(2)(4)2 f(-2, 4) = 4 + (-2)(4)^2

STEP 4

Simplify the expression:
f(2,4)=4+(2)(16) f(-2, 4) = 4 + (-2)(16) f(2,4)=432 f(-2, 4) = 4 - 32 f(2,4)=28 f(-2, 4) = -28

STEP 5

Substitute x=3 x = -3 and y=2 y = -2 into the function:
f(3,2)=2+(3)(2)2 f(-3, -2) = -2 + (-3)(-2)^2

STEP 6

Simplify the expression:
f(3,2)=2+(3)(4) f(-3, -2) = -2 + (-3)(4) f(3,2)=212 f(-3, -2) = -2 - 12 f(3,2)=14 f(-3, -2) = -14

STEP 7

Substitute x=5 x = -5 and y=4 y = 4 into the function:
f(5,4)=4+(5)(4)2 f(-5, 4) = 4 + (-5)(4)^2

STEP 8

Simplify the expression:
f(5,4)=4+(5)(16) f(-5, 4) = 4 + (-5)(16) f(5,4)=480 f(-5, 4) = 4 - 80 f(5,4)=76 f(-5, 4) = -76
The evaluated function values are:
At (2,4)(-2, 4): 28-28
At (3,2)(-3, -2): 14-14
At (5,4)(-5, 4): 76-76

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