The-two-side-of-rectangle-are-2x-and-5-2x-units-respectively-For-what-value-of-x-the-area-of-rectangle-will-be-maximum-

Question Number 134874 by bemath last updated on 08/Mar/21

The two side of rectangle are

2 x and (! 5 - 2 x) units respectively

For what value of x the area of

rectangle will be maximum ?

Commented by Ñï= last updated on 08/Mar/21

! 5 = 5! (1 - 1! + \frac{1}{2!} - \frac{1}{3!} + \frac{1}{4!} - \frac{1}{5!}) = 44

I g o t i t .

Answered by mr W last updated on 08/Mar/21

A = (2 x) \times (5 - 2 x) ⩽ \frac{2 x + (5 - 2 x)}{2} = \frac{5}{2}

m a x . = \frac{5}{2} w h e n 2 x = 5 - 2 x, i . e x = \frac{5}{4}

Commented by bemath last updated on 08/Mar/21

this (! 5 - 2 x) sir ?

Commented by mr W last updated on 08/Mar/21

w h a t d o y o u w a n t t o s a y w i t h! 5 ? i f

y o u m e a n! 5 = 44, y o u c a n r e p l a c e 5

w i t h 44 .

Commented by bemath last updated on 08/Mar/21

in the book it says sir. ha ha ha

Commented by Ñï= last updated on 08/Mar/21

! 5 = 5 \times 6 \times 7 \times 8 \times 9 ?

Commented by mr W last updated on 08/Mar/21

Facebook Tweet Pin