How do I find the derivative of the square root of (2x+1) using the chain rule?

In summary, the general rule for finding the derivative of a square root function is to rewrite it as a power of 1/2 and use the power rule. The chain rule can also be used to find the derivative of a square root function. The derivative of the square root of x is 1/2x^(1/2). To find the derivative of a square root function with a coefficient in front, apply the power rule after rewriting the function. Other methods for finding derivatives of square root functions include using the quotient and product rules for derivatives.
  • #1
tad.confused
7
0
I need to find the derivative of the square root of (2x+1) (not sure how to do square root symbol here, sorry)

I understand that the square root of (2x+1)= (2x+1)^(1/2), but I am getting a little confused on how to continue from there.
 
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  • #2
From (2x+1)^(1/2) you should use the chain rule. take the derivative of the inside and multiply it by the derivative of the outside, when taking derivative of outside use substitution.
 

FAQ: How do I find the derivative of the square root of (2x+1) using the chain rule?

What is the general rule for finding the derivatives of square roots?

The general rule for finding the derivative of a square root function is to first rewrite the function as a power of 1/2, then use the power rule for derivatives. This means taking the exponent (1/2) and multiplying it by the coefficient in front of the square root, and subtracting 1 from the original exponent.

Can the chain rule be used to find the derivative of a square root function?

Yes, the chain rule can be used to find the derivative of a square root function. This is because the square root function can be thought of as the composition of two functions - the inner function being the square root and the outer function being the variable inside the square root.

What is the derivative of the square root of x?

The derivative of the square root of x is 1/2x^(1/2), or 1/2 times the square root of x. This can be found using the general rule for finding derivatives of square roots.

How do I find the derivative of a square root function with a coefficient in front?

To find the derivative of a square root function with a coefficient in front, you can simply apply the power rule for derivatives after rewriting the function as a power of 1/2. The coefficient will remain in front of the square root and the exponent will be multiplied by the coefficient.

Are there any other methods for finding the derivatives of square root functions?

Yes, there are a few other methods for finding the derivatives of square root functions. One method is to use the quotient rule for derivatives if the function is written as a fraction with a square root in the numerator or denominator. Another method is to use the product rule for derivatives if the square root function is multiplied by another function.

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