@user-nr6rr8yj6x Ай бұрын
Good❤
@CabezaDePercebe Ай бұрын
At 6:30, the ecuation is : v² - 20v +1 = 0. Still, the values for a, b and c are correct.
@alaeddinemustapha8496 Ай бұрын
Error in solution at 6.17 min1/v×v = 1 not v.
@haiderlughmani Ай бұрын
Yes! its mistake 😊
@nasrullahhusnan2289 Ай бұрын
Equation v²+v=20v at 6:15 is incorrect. Supposedly it is v²+1=20v
@heenapathan4700 5 күн бұрын
V2-19v 7.35 minutes equations not satisfied -20v+v will e subtract . In this equation c=0
@user-ye7de2en6s Ай бұрын
There is a mistake. The answer same, but negative.
@haiderlughmani Ай бұрын
Where? I chucked step by step its correct throughout.
@canvadesigner_616 Ай бұрын
❣
@lewistsao3279 Ай бұрын
There is no check if 10-sqrt(11) is positive. Not obvious with casual inspection (needs calculator, old fashioned log table not precise enough)
@danieldepaula6930 Ай бұрын
An easy way to verify that is squaring both numbers and comparing them. (10)² = 100 (3sqrt(11))² = 9*11 = 99 100 > 99, therefore, 10 > 3sqrt(11). Then, 10-3sqrt(11) is positive.
@lewistsao3279 Ай бұрын
Ah yes of course. It's been over 40 years since I last dabbled in mental gymnastics and had forgotten all these tricks 😢
@LongLe-wx4uk Ай бұрын
A^n=1/a^-n (5/2)^x=1/(5/2)^-x
@haiderlughmani Ай бұрын
In denominator power should be negative.
@cubemind9877 Ай бұрын
It's Ans is 1
@haiderlughmani Ай бұрын
?
@cubemind9877 Ай бұрын
Because I take log both side
@2012tulio 8 күн бұрын
You joking?
@LongLe-wx4uk Ай бұрын
🤨
@keroppikeroppi6572 Ай бұрын
5:54 1/V x V = V ?
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