<p>As the title states, any last minute tips/formulas that I you guys could share? I'm using a TI 89, so if there's anything that could be beneficial to me that you guys would recommend, I would appreciate it.</p>
<p>Here's a tough practice problem to test you and/or your TI-89.</p>
<p>Given that i^2 = -1, for how many integers m is (i + m)^4 an integer?</p>
<p>A) none
B) 1
C) 2
D) 3
E) 4</p>
<p>Only nmber I can think of is 0 for that one. I think 0 is an integer. Is it B?</p>
<p>Is the answer D? I get 0, -1 and 1.</p>
<p>Can some list some important things you need to know how to do on the 89 + how to type them in? It'd probably help you (the poster) review just as much as it would help the rest of us learn.</p>
<p>Just type (i+x)^4 in the graph function.
Look at the table. o_o</p>
<p>1 gives you -4 (that's 1)
0 gives you 1 (that's 2)
-1 gives you -4 (that's 3)</p>
<p>If you continue plugging it it, you will see an increasing thread of weird a+bi. The answer is D</p>
<p>I tried graphing that and nothing came up on the screen. What should I zoom to?</p>
<p>Don't look at the graph...
go directly to the table. o_o</p>
<p>how do type "i" in to a ti-84?</p>
<p>No clue, but you can do it to the 89 with 2nd -> catalog.
hey meadow, i think if you look under "math" you can find it. I remember finding an i on there once :]</p>
<p>Oh yeah, okay. Not under "Math" but it is under Catalog.</p>
<p>Don't look at the graph...
go directly to the table. o_o</p>
<p>lol how do I do that? Yeah I'm really terrible with calcs.</p>
<p>the " i " is in the decimal button, 2nd decimal. for TI 83, i assume its the same for 84</p>
<p>^I know how do that!</p>
<p>2nd --> graph(table)</p>
<p>*^I know how do that!</p>
<p>2nd --> graph(table)*</p>
<p>I have the 89.</p>
<p>it might be F5? experiment. You'll figure it out....</p>
<p>hmm it shows up all ERROR on the graph table...why is that?</p>
<p>im getting all errors for all y values</p>
<p>how does one solve this with a ti84?</p>
<p>how to solve this using a Ti-84??i changed the mode but still saw rows of errors. and does this question come up often (with same level of difficulty)? or there will be easier on the real test?</p>