F(x)=x³-3x+sinx
show that f(x) + f(-x)=0
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Step-by-step explanation:
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Step-by-step explanation:
Given :-
f(x)=x^3-3x+sin x
To find:-
Show that f(x)+f(-x) = 0
Solution:-
Given that
f(x) = x^3 -3x + Sin x
put x = -x then
f(-x) = (-x)^3-3(-x)+Sin (-x)
=>f(-x)= -x^3+3x - Sin x
now
f(x)+f(-x)
=>(x^3 -3x + Sin x)+(-x^3+3x - Sin x)
=>x^3-3x+Sin x-x^3+3x - Sin x
=>(x^3-x^3)+(-3x+3x)+(Sin x-Sin x)
=>0+0+0
=>0
f(x)+f(-x) = 0
Hence, Proved
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