Question

let f and g be the two function from R to R defined by f(x) =3 x-4 and g(x)=x2+3 .find gof and fog​

Answer 1

Explanation:

Given that f(x)=cosx and g(x)=3x

2

Given f:R→R and g:R→R,

∴f o g:R→R and g o f:R→R

f o g(x)=f(g(x))=f(3x

2

)=cos(3x

2

)

g o f(x)=g(f(x))=g(cosx)=3cos

2

x

Since cos(3x

2

)



=3cos

2

x.

∴g o f



=f o g

Answer 2

Answer:

हाय संतोष बहन आप कैसे हैं आप क्या कर रहे हैं