The title says it all. Today’s question is for all you stubborn (or lazy) buggers out there. This is an exam favourite that is almost certain to appear in either Paper 1 or Paper 2 or even both.
For various reasons, however, roughly 80% of Miss Loi’s students couldn’t get this right – most of the time purely down to plain stubbornness or laziness. Tsk!
Sketch the graph of h : x → |1-(1/2)x| + 2 for -2 ≤ x ≤ 6.
State the range corresponding to the given domain.
To succeed in this question, first satisfy yourself that you really know what on earth is range and what is domain.
Next, R.E.A.D out loud 10 times to yourself the following three words: SKETCH THE GRAPH!!! Make sure you’re alone when you do this to avoid being sent to IMH.
Simple isn’t it? That’s what the question says right at the start anyway.
But do be surprised at the sheer number of stubborn students who cannot for the life of them accept having to sketch a simple graph in a functions question and instead insist on solving by substitution. Yeah yeah, it’s the era of thinking out of the box. You’re a non-conformist. It’s not cool to follow instructions … blah blah blah.
To these students, Miss Loi says “Go ahead!”. You might still get your answer (most often you don’t lol) but please do yourselves a favour by not trying such stunts under exam conditions when time is of essence. Try it instead when you’re alone on a Valentine’s night. Most exam questions are structured in such a way that you can complete in a reasonable amount of time provided you follow what they say.
This is not the Maths Olympiad!
11 Comments
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you know what? i got my education in Malay, so i really have problem trying to translate all these mathematics term from english back to malay so that i can understand the question... so i am skipping this.
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Nyamuk kecil,
Pertanyaan ini dak panjang. Mana mu dak faham? Cik Loi coba try menulis bahasa:
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Sila melukis graf untuk h : x → |1-(1/2)x| 2 for -2 ≤ x ≤ 6.
Jadi katakan rangenya untuk domainnya di atas.
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Minta maaf bahasa rojak saya 🙂
Nyamuk sangat pandai pasti dak apa lah!
曜
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Wah.. u noe Malay too??
Wait.. let me see ur profile, u singaporean rite?
曜
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Hehe, Zee like you Miss Loi is Truly Asia!
Tapi sudah lama dak cakap lah.
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i think your malay more indonesian than malaysian... that is from the way certain words are spelled lah... but you trully asia? i think is trully Asean lah...
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Truely rojak lah. Hahaha...
P.S. Just realized both of us spelt "truely" wrong - truely atrocious!
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Isnt it truly? Ha. Hi!
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Damn. Was actually reading this when this was posted.
But "truely" does look more 'correct' than "truly" at first glance (to her anyway).
Now you know why Miss Loi can't be an English teacher!
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uh just draw |1-(1/2)x| den just shift up two units rite
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Righto John!
Range: {y : 2 ≤ y ≤ 4, y ∈ R}
Domain: {x : -2 ≤ x ≤ 6, x ∈ R}
There you have it. Don't forget to state the range!
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it make me confusing....