ar^(n-1) > 11

45056 x 0.25^(n-1) > 11

(n-1) log 0.25 > log (1/4096)

n-1 < 6

n < 7

n = 6

Ah i was caught by the log0.25. Have to be extra careful

I know. But why does the sign changes direction? I don't really know the rule when it comes to changing the sign. < and >.

lol i was even stupid
i did
1/4^n-1 > 4^-6
and i got n>7 . sigh.
should only do the log method rite?

log 0.25 = negative ans

so u must change the direction

Because log 0.25 = -0.602

When you change the place, and it is negative, the > changes to <

Lol. FYI, I was asking about moral. And furthermore I'm pretty sure sejarah didn't ask any question similar to that? Haha.

I OVERLOOKED THE NEGATIVE LOL o0o. HAHAHAHA IGNORE MY o0o too tension d.......................

but if the object is floating and stationary, then the buoyant force = weight of object.

i think if buoyant force > weight of object, the object will just keep going upwards. eventually, the weight of fluid displaced will be equal to the weight of the object.

Can anyone answer him cause i did the same thing too. We should only use log right?

(1/4)^n-1 > 4^-6

4^(-n+1) > 4^-6

-n + 1 > -6

-n > -7

n < 7

n = 6

oops i know where i did wrong...thank you!

what if i do it this way?
(1/4)^n-1 > (1/4)^6

n-1 > 6

n > 7

Thats why i'm confused

i think we supposed to inverse it first to
4^-n+1>4^-6

why can't we cancel 1/4 with 1/4?
i know we'll get the answer by inversing 1/4. But i just want to clarify

in physics , paper 3 , is it okay to mix up materials and apparatus or must separate them like

Materials:...
Apparatus :....

or

Materials and Apparatus ??

Materials and Apparatus

Or use this :

ar^n-1 > 11

for all bio, chem, phy, must separate the materials and apparatus...

E jor,the answer sux.

C is refraction already!