Mathematical Statements - 2 - Flashcards

1
Q

f(x) is increasing on (a;b)

A

Hàm số f(x) đồng biến trên khoảng (a;b)

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2
Q

f(x) is decreasing on (a;b)

A

Hàm số f(x) nghịch biến trên khoảng (a;b)

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3
Q

The graph of y = f(x) + k is the graph of y = f(x) shifted k units
upward if k > 0 or shifted |k| units downward if k < 0

A

Đồ thị của hàm số y = f(x) + k là đồ thị của hàm số y = f(x) tịnh tiến lên k đơn vị (k > 0) hoặc tịnh tiến xuống |k| đơn vị (k < 0)

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4
Q

The graph of y = f(x - h) is the graph of y = f(x) shifted h units to
the right if h > 0 or shifted |h| units to the left if h < 0

A

Đồ thị của hàm số y = f(x) + k là đồ thị của hàm số y = f(x) tịnh tiến qua phải k đơn vị hoặc qua trái |k| đơn vị.

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5
Q

The graph of y = -f(x) is the graph of y = f(x) reflected through the x axis

A

Đồ thị của hàm số y = -f(x) là đồ thị của hàm số y = f(x) lấy đối xứng qua trục Ox

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6
Q

The graph of y = f(-x) is the graph of y = f(x) reflected through the y axis

A

Đồ thị của hàm số y = f(-x) là đồ thị của hàm số y = f(x) lấy đối xứng qua trục Oy

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7
Q

The graph of y = cf(x) is the graph of y = f(x) stretched (c > 1) / compressed (0 < c < 1) vertically by a factor of c.

A
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8
Q

the graph of y = f(cx) is the graph of y = f(x) stretched (0 < c < 1) / compressed (c > 1) horizontally by a factor of c.

A
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9
Q

(a, b)

A

The open interval from a to b

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10
Q

[a, b]

A

the closed interval from a to b

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11
Q

[a, b) or (a, b]

A

The half-open interval from a to b

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