Pls . find the first four terms of the recursive sequence defined by the following formula:

see explanation

Step-by-step explanation:

Given the recursive formula = and

= 2 = , then

= ( multiply both sides by 4 )

a₃ = 4 × = 9

= 9 ( multiply both sides by 4 )

a₂ = 36

= 36 ( multiply both sides by 4 )

a₁ = 144

The first 4 terms are

144, 36, 9, 2

step-by-step explanation:

reduce the friction between its moving parts

step-by-step explanation:

in fact, by reducing the friction between the moving parts of the machine, it is possible to reduce the energy wasted due to this friction; therefore, more input energy is converted into useful work, and this will improve the efficiency of the machine.