Rewrite function: We need to find the derivative of the function f(x)=x52. To do this, we will use the power rule for differentiation, which states that if f(x)=xn, then f′(x)=n⋅xn−1.
Apply power rule: First, we rewrite the fifth root of x squared as x(2/5) to make it easier to differentiate.f(x)=(x2)(1/5)=x(2/5)
Find derivative: Now we apply the power rule for differentiation to find f′(x). f′(x)=(52)∗x(52−1)=(52)∗x−53
Evaluate at x=32: Next, we need to evaluate the derivative at x=32.f′(32)=(52)⋅32−53
Simplify expression: We simplify the expression by calculating 32(−3/5). Since 32 is 25, we can rewrite 32(−3/5) as (25)(−3/5).32(−3/5)=(25)(−3/5)=25∗(−3/5)=2−3
Calculate value: Now we calculate 2−3, which is 1/(23)=1/8.2−3=1/(23)=1/8
Calculate value: Now we calculate 2−3, which is 1/(23)=1/8. 2−3=1/(23)=1/8 Finally, we multiply (2/5) by (1/8) to get the value of the derivative at x=32. f′(32)=(2/5)∗(1/8)=2/(5∗8)=2/40=1/20
More problems from Multiplication with rational exponents