絕對可以,除非題目指定了某種方法。Marking Scheme 中有以下指示: It is very important that all markers should adhere as closely as possible to the marking scheme. In may cases, however, candidates will have obtained a correct answer by an alternative method not specified in the marking scheme. In general, a correct answer merits ALL THE MARKS allocated to that part, unless a particular method has been specified in the question. Markers should be patient in marking alternative solutions not specified in the marking scheme.
呢個方法比起學校教嗰個冗長嘅方法好太多了,很受用,謝謝!!!
Be creative! 數學題往往都有很多不同的分法去解決。
簡單易明🙀
thank you very much!!!教得好清晰!!
真係好清晰
寫出方程:
log8^y=-1/3·log4^X+1
=-1/6·log2^X+1
利用結果還原方程的形式:
y=AX^K
log8^y=log8^A·X^k
=K·log8^X+log8^A
=k/3·log2^X+log8^A
前後系數比對:
K/3=-1/6,K=-1/2
log8^A=1,A=8
所以
y=8X^-1/2
嘩唔同演繹,各有優越👍👏😜
thxxx
(32).
log3^y=2x+4
Y=3^(2x+4)
Y=(3^4)(3^2)^x
因為,Y=mn^x
所以,n=3^2=9
thanks!
1:06 個動畫點整?好正,我想學!
相信你會失望了,這動畫是用 Powerpoint 做的。
PPT高手
就咁寫就得?會唔會扣 step分?
如果個index 是negative 例如9的-4
很好,超清楚
6:36 難道有工商?😂
我想請問下,點解n二次=81,n唔係應該=正負9咩
當處理 y=a^x 的圖像時,a 必定是正數。否則它根本不能產生一條連續的線。
你可以試下按計數機。 (-2)^3 得到 -8,但 (-2)^3.5 會 error。
good video
'
如果用最後一個方法會唔會扣分
想問y-0=-2(x-4)係咩黎
直線方程
thinks!
卷一都可以代點嗎?
絕對可以,除非題目指定了某種方法。Marking Scheme 中有以下指示:
It is very important that all markers should adhere as closely as possible to the marking scheme. In may cases, however, candidates will have obtained a correct answer by an alternative method not specified in the marking scheme. In general, a correct answer merits ALL THE MARKS allocated to that part, unless a particular method has been specified in the question. Markers should be patient in marking alternative solutions not specified in the marking scheme.