Sumali sa IDNStudy.com at makakuha ng mga sagot sa iyong mga tanong. Magtanong at makakuha ng detalyadong sagot mula sa aming komunidad ng mga eksperto na may kaalaman.

Find the Derivatives.
Show your solution.
f(x) = 3^cos3x​


Find The DerivativesShow Your Solutionfx 3cos3x class=

Sagot :

Answer:

A+B| = |A| = |B|

On the square of all… |A+B|^2 = |A|^2 = |B|^2

|A|^2 + |B|^2 + 2A.B = |A|^2 = |B|^2

We can also write this to….

|A|^2 + |B|^2 + 2|A||B| cosθ = |A|^2 = |B|^2 .. [where θ is angle b/w Vec(A) & Vec(B)]

=====2|A|^2 + 2|A|^2 cosθ = |A|^2 ….(because |A| = |B|)

From this… cosθ = -1/2

So, …. θ = 2π/3