If (f(x)=4x-1) and (f(a)=19), what is the value of (a)?
A. (5)
(f(a)=4a-1).
From (4a-1=19), we get (4a=20).
Therefore (a=5). चरण 1: (f(a)=4a-1) होगा। चरण 2: (4a-1=19) से (4a=20)। चरण 3: इसलिए (a=5)।
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Correct Answer: A. (5). Explanation: चरण 1: (f(a)=4a-1) होगा। चरण 2: (4a-1=19) से (4a=20)। चरण 3: इसलिए (a=5)। / Step 1: (f(a)=4a-1). Step 2: From (4a-1=19), we get (4a=20). Step 3: Therefore (a=5).
(f(a)=4a-1).
Therefore (a=5). चरण 1: (f(a)=4a-1) होगा। चरण 2: (4a-1=19) से (4a=20)। चरण 3: इसलिए (a=5)।
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