This method is actually better if answers are required in exact forms... the Graph app is not able to give intersection values in exact form so often you will need to convert your answers to decimal to check if they are correct if using graph app.

This video was very helpful. Thank you!

A very helpful video, Thanks a lot!

So there is no difference to express ≥ and > in the interval, using comma for both?

Thank you so much! This really helped!

That was very helpful. Thank you.

I love you lad, u saved me

This calculator is mind-blowingggggg I might actually get A* now 🤩

Xsinx +cosx=o This eqn solve in fx-991ex class wiz can't change the range that is can't put zero help me out

Hey any updates on how to fix the issue im encountering? i have nothing so far

Thanks 😀😁

what if you need it in terms of pi?

Thanks for your tips. I have one problem to ask you that when I want to solve: tan x = 1, 0 ≤ x ≤ 2π on fx-CG50, the answer must be x = π/4 and 5π/4 but I don't know why the calculator just shows only 1 answer which is x = π/4??

@TheCalculatorGuide

3 жыл бұрын

Not sure, but I guess it may be that only certain results are shown. I am still looking into this.

@ChinhNguyen-xj3us

3 жыл бұрын

@@TheCalculatorGuideThank for your response. I have found that If I change the angle from radian to degree to Solve tan x =1, 0 ≤ x ≤ 360, it will show full answers which are x = 45 degrees and x = 225 degrees and then we can convert these answers to radian by multiplying them by π/180. So I think when solving tan trigonometric equation we just change to degree to solve and convert the answers to randian.

Hello there, when I’m trying to solve 12cos x^2 - 7cosx + 1 = 0 360 Appreciate if you reply ASAP, thank you!

@TheCalculatorGuide

3 жыл бұрын

Try putting the cos x² in brackets/parentheses first | 12 (cos x)² -7cos x + 1 = 0, x, 360, 540 | See if that gets you the solutions you need.

if you do tanx= 60,x,0,360 you get 2 values, but if you do tan2x=60,x,0,360 you get no solution? why is this the case? it should be showing the two values you had before halfed + additional values that fit within the range after halfing? really worrying me here as i could miss values in the exam, help would be appreciated

9750 gives the answer in decimals always not in terms of pi. I think I’ll buy the gc50

If I got the same calaculater, how come my calculator doesn't have the las four Icon from H TO L?

@TheCalculatorGuide

4 жыл бұрын

As stated in a reply to your comment on another video, you have to upload and install them they are extras. education.casio.co.uk/os-files/cg50-add-ins

Is this option off during exam mode?

could you do a TUTORIAL on how to do stuff like 2sin^2(2x)-cos(2x)-1 = 0 in range 0 to 180. Because i dont know how you do sin^2

@TheCalculatorGuide

Жыл бұрын

Should be exactly the same process but will have have a look if I get a chance

@lemonlime8949

Жыл бұрын

@@TheCalculatorGuide how do I input ^2 for sin cos and tan because it’s not like how the question is written

@satoshinakamoto5256

9 ай бұрын

@@lemonlime8949 (sin 2x)^2

is there an easy way to solve trig equations with the classwiz?

@TheCalculatorGuide

4 жыл бұрын

Not an easy way as such. If the Classwiz is in Radians you can use Solve to find a result, but it is usually the closest result so won’t give you all possible solutions. This way on the CG50 is the most comprehensive I’ve come across so far.

@apocalypticbean

4 жыл бұрын

@@TheCalculatorGuide I am very sad :( Thanks for the reply

Can you do this on the 991-ex?

@TheCalculatorGuide

2 жыл бұрын

Unfortunately not, no.

When I press the X,theta, T button instead of geting x I get theta, how can I change it?

@TheCalculatorGuide

3 жыл бұрын

If you don't have anything stored, try resetting the Setup Data from the reset menu in settings. Please bear in mind this may alter other settings which you may have to go back and change. Make sure you have backed up anything you may have in storage

@adrianotalavera9474

3 жыл бұрын

@@TheCalculatorGuide ok thankyou. I had al ready solve it, so dont worry.

hi, how can i do 6cos^2x on the calculator?

@TheCalculatorGuide

3 жыл бұрын

It must equal a value to calculate. Also your angle must be in radians. You can change it to degrees afterwards if needed.

@iqrasamad9269

3 жыл бұрын

@@TheCalculatorGuide hi thank you for the reply. It still doesn't allow me to square a sin/cos/tan? could I have a tutorial please

@TheCalculatorGuide

3 жыл бұрын

@@iqrasamad9269 Sorry i think I misunderstood what your asked originally. Brackets (Parentheses) are the key here. Say your x is 30° . The question is - Find 6cos²(2x). You would input this as follows: 6 , ( , cos , (2x30) , ) , x² . It will look like this 6(cos (2x30))² . Press EXE to get your answer 3/2 .

@iqrasamad9269

3 жыл бұрын

@@TheCalculatorGuide thank you :)

Quick question, how can I change the sin, cos, tan, all into CSC, sec,cot?

@TheCalculatorGuide

Жыл бұрын

You have to do them as a fraction. Input for example 1/sin x for Cosec x. Or you can use the x-1 button

@Bixen_Bings

Жыл бұрын

@@TheCalculatorGuide huh, not even a feature for CSC,sec, cot, alright thanks, can you also tell me how I can change them into arc, like arcsin, arccos, arctan

@TheCalculatorGuide

Жыл бұрын

That is the shift function designated as sin-1 cos -1 and tan-1

@Bixen_Bings

Жыл бұрын

@@TheCalculatorGuide ooooh, I honestly thought that was like the cosecant, thanks so much, now I have a lot more confidence in my upcoming tests

Can we do all this on fx911ex?

@TheCalculatorGuide

Жыл бұрын

No there isn't the facility available.

@junaidiqbal246

Жыл бұрын

@@TheCalculatorGuide alright ty😊

Hey i am encountering an issue where SolveN is only giving me 10 answers when i need more for example : cos x = sin x is there any way to fix that pls

@TheCalculatorGuide

Жыл бұрын

Don't know, but at a guess, you may be at the limit at ten. They have to set a limit somewhere as there are an unlimited number of answers....maybe that's it??

@thedude5896

Жыл бұрын

@@TheCalculatorGuide is there a way to remove the limit or like change it to 50 if thats the case here?

@thedude5896

Жыл бұрын

because i looked alot for a fix but all videos i found were about how to USE SolveN and nothing about there being only 10 solutions

it doesnt show more than 10 solutions at once.

1st comment

I wan learn solving trignometic eqn with class wiz make more tutrioal

SolveN(2tan(2x)=5,x,0,2pi) only gives 1 solution when there are actually 4. But if you swap it to SolveN(2tan(2x)=5,x,0,360) it gives you all 4. Does anyone know anything I can do to my calculator so that it doesn't make this mistake for radians anymore?

@TheCalculatorGuide

3 жыл бұрын

It only works in radians, so you must have your input in radians and then change to degrees after if needed.

@bpjava2453

3 жыл бұрын

Same!

would they not want working out

@TheCalculatorGuide

3 жыл бұрын

They might do. It depends on the exam and the what they are asking question. Ideally you need to know how via a non-calculator method with this being an additional skill you can use where possible.

this calculator is a cheat code

@TheCalculatorGuide

2 жыл бұрын

It does feel like it at times...but if it is allowed in exams then it's fine.