Maths-
General
Easy

Question

If f left parenthesis x right parenthesis equals 2 x to the power of 6 plus 3 x to the power of 4 plus 4 x squared , then f to the power of straight prime left parenthesis x right parenthesis is

  1. Even function
  2. An odd function
  3. Neither even nor odd
  4. None of these

hintHint:

A function's derivative is the function whose value at x is f′. (x). The graph of a function's derivative, f(x), is connected to the graph of f. (x). If the tangent line to f(x) has a positive slope, then f′(x)>0. If f′(a) exists, then a function f(x) is said to be differentiable at a. Here we have given the function If f left parenthesis x right parenthesis equals 2 x to the power of 6 plus 3 x to the power of 4 plus 4 x squared , then we have to find f to the power of straight prime left parenthesis x right parenthesis is even or odd function. 

The correct answer is: An odd function


    So now we have given the function as f left parenthesis x right parenthesis equals 2 x to the power of 6 plus 3 x to the power of 4 plus 4 x squared . 

    • A function is "even" when f(x) = f(−x) for all x.
    • A function is "odd" when −f(x) = f(−x) for all x.
    Let y = f(x) be a function of x. Then, the rate of change of “y” per unit change in “x” is given by: dy / dx
    Here we have given that function: f left parenthesis x right parenthesis equals 2 x to the power of 6 plus 3 x to the power of 4 plus 4 x squared 
    Differentiation it, we get:
    f left parenthesis x right parenthesis equals 2 x to the power of 6 plus 3 x to the power of 4 plus 4 x squared
f apostrophe left parenthesis x right parenthesis equals left parenthesis 6 cross times 2 x to the power of 6 minus 1 end exponent right parenthesis plus left parenthesis 4 cross times 3 x to the power of 4 minus 1 end exponent right parenthesis plus left parenthesis 2 cross times 4 x to the power of 2 minus 1 end exponent right parenthesis
f apostrophe left parenthesis x right parenthesis equals 12 x to the power of 5 plus 12 x cubed plus 8 x to the power of 1

    Here we found the derivative of the given function. The power is odd in the derivative.

    Now we will find whether the function is even or odd. Replacing x with -x, we get:
     f apostrophe left parenthesis negative x right parenthesis equals 12 left parenthesis negative x right parenthesis to the power of 5 plus 12 left parenthesis negative x right parenthesis cubed plus 8 left parenthesis negative x right parenthesis to the power of 1
f apostrophe left parenthesis negative x right parenthesis equals negative 12 x to the power of 5 minus 12 x cubed minus 8 x
f apostrophe left parenthesis negative x right parenthesis equals negative left parenthesis 12 x to the power of 5 plus 12 x cubed plus 8 x right parenthesis

    So the function is odd.

    Differentiation is the process of determining a function's derivative. The derivative is the rate at which x changes in relation to y when x and y are two variables. A constant function has zero derivatives. For instance, f'(x) = 0 if f(x) = 8. So the derivative function is odd.

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