Dik : f (x) = √2x+5 Ditanaya : f-¹ (x)

jawab


f(x) = √(2x + 5)
f(x) = (2x + 5)^(1/2)

f ' (x) = 1/2 (2)( 2x+ 5)^(-1/2)

f ' (x ) =  1/ √(2x+ 5)

atau

f ' (x)  = (√ (2x + 5) ) / (2x+ 5)