Select the correct answer. For which function is f(x) not equal to f -1(x)?
2 answers:
A is the answer for which function f(x) is t equal to f -1(x)
A.
f(x)= 2-x
let us find f⁻¹(x)
let us say f(x)=y
y=2-x
now we switch x as y and y as x
x=2-y
solve for y
y=2-x
f⁻¹(x)=2-x
so here f(x) and f⁻¹(x) are same
B.
f(x)=-x
let us find f⁻¹(x)
let us say f(x)=y
y=-x
now we switch x as y and y as x
x=-y
solve for y
y=-x
f⁻¹(x)=-x
so here f(x) and f⁻¹(x) are same
C.
f(x)=2x
let us find f⁻¹(x)
let us say f(x)=y
y=2x
now we switch x as y and y as x
x=2y
solve for y
y=x/2
f⁻¹(x)=x/2
so here f(x) and f⁻¹(x) are not same
D.
f(x) =2/x
let us find f⁻¹(x)
let us say f(x)=y
y=2/x
now we switch x as y and y as x
x=2/y
solve for y
y=2/x
f⁻¹(x)=2/x
so here f(x) and f⁻¹(x) are same
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Answer: 26∗34 2 6 ∗ 3 4
Step-by-step explanation:
Answer:X2 = 5
Y2 = 4
ΔX = 4
ΔY = 3
θ = 36.869897645844°
Equation of the line:
y = 0.75x + 0.25
When x=0, y = 0.25
When y=0, x = -0.33333333333333
OR
X2 = -3
Y2 = -2
ΔX = -4
ΔY = -3
θ = 216.86989764584°
Equation of the line:
y = 0.75x + 0.25
When x=0, y = 0.25
When y=0, x = -0.33333333333333
Answer:
x < 3
Step-by-step explanation:
Since 3x - 5 < 4 then we can transpose the inequality to make x the subject of the equation:
If 3x - 5 < 4
⇒ 3x < 4 + 5
⇒ x < 9 ÷ 3
⇒ x < 3
Step-by-step explanation:
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