Math Problem Statement

If u(t) =

sin(5t), cos(6t), t

and
v(t) =

t, cos(6t), sin(5t)

, use the theorem given below to find d dt  

u(t) · v(t)

. Suppose u and v are differentiable vector functions. Then d dt  

u(t) · v(t)

= u ′(t) · v(t) + u(t) · v ′(t). don't explain, just give me the answer

Solution

The derivative of u(t)v(t)u(t) \cdot v(t) is:

10tcos(5t)+2sin(5t)6sin(12t)10t \cos(5t) + 2\sin(5t) - 6\sin(12t)

Do you want more details or have any questions?

Here are 5 related questions:

  1. How do you compute the dot product of two vector functions?
  2. What is the significance of the product rule in vector calculus?
  3. How do you interpret the result geometrically when dealing with vector functions?
  4. Can you calculate the second derivative of u(t)v(t)u(t) \cdot v(t)?
  5. How do vector functions apply to physical systems, like motion or forces?

Tip: When differentiating vector functions, apply the product rule to each component individually!

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Math Problem Analysis

Mathematical Concepts

Vector Calculus
Differentiation
Dot Product
Product Rule

Formulas

u(t) · v(t) = u₁(t)v₁(t) + u₂(t)v₂(t) + u₃(t)v₃(t)
d/dt [u(t) · v(t)] = u′(t) · v(t) + u(t) · v′(t)

Theorems

Product Rule for Vector Functions

Suitable Grade Level

College Level (Calculus III or Vector Calculus)