Sometimes the calculator detects that an equation is too complicated to plot perfectly in a reasonable amount of time. When this happens, the equation is plotted at lower resolution.
Unresolved Detail In Plotted Equations

Jaden Simis (Jadoof) \cos\left(x\right)=\sin\left(xy\right)

Sun Shengkun \int_a^bf\left(x\right)dx=\sec y
it is lines but have unresolved details

Sun Shengkun https://www.desmos.com/calculator/ljsggbc2oi
pretty sure I broke desmos

Sun Shengkun \pi x+\cos\left(\frac{\pi x}{5}\right)\left(\sin\ xy\right)\cot\left(x\right)=y
hehe...

GlitchedGraph666 \sum_{n_1=\sin\left(\sin\left(\sin\left(\sin\left(\sin\left(\sin\left(\sin\left(\sin\left(\sin\left(x!!!!!!!!!\right)\right)\right)\right)\right)\right)\right)\right)\right)}^{x^{x^{x^{x^{x^{\prod_{n_2=y^y}^{y^{2!^{x!!!!!!!!!!!!!!!!!!}}}n_2!!!!!!!!!!!!!!!!!!!^{n_2!!!!!!!}}+x}}}}}n_1^{x^{x^{x^{y^2}}}}+y^{y^{y^{y!!!!!!!!!!!!!!\cdot\prod_{n_{50}=2^{3^{4^{5^{6^{7^x}}}}}}^{\prod_{n_{100}=\prod_{n_{222}=666}^{x!!!!!!!!!!!!!}\left(n_{222}!^{n_{222}!^{n_{222}!}}\right)}^{\tan\left(y+\tan\left(y+\tan\left(y+\tan\left(y+\tan\left(y+\tan\left(y+\tan\left(y+\tan\left(y+\tan\left(y+\tan\left(y+\tan\left(y+x\right)\right)\right)\right)\right)\right)\right)\right)\right)\right)\right)}n_{100}!!!!!!!!}n_{50}!!!!!!!!!!}}}>x!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!+y!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!+\prod_{n_{732}=y!!!}^{x!!!}\sin\left(x!!!^{n_{732}!^{^{n_{732}!^{^{n_{732}!^{^{n_{732}!^{^{n_{732}!^{666}}}}}}}}}}\right)

Charliedevelin x!!!!!!!!!!!!!!!=y!!!!!!!!!!

Andrew Carratu and this:
\csc\left(\pi x+\cos\left(\frac{\pi x}{5}\right)\left(\sin\ xy\right)\cot\left(x\right)\right)=\sec\left(y\right)

Orion D. Hunter sin(x!)=sin(y!) and x!=y! actually behaves like x=y but it has a difference in desmos

Orion D. Hunter https://www.desmos.com/calculator/spjy78xgeb just, why, was, sin(x!!)=sin(y!!) not, plotted, like, X=Y

Tanksear Industries https://www.desmos.com/calculator/rnwl7zebbi
The Field of Infinite Sevens

Thecubicalguy1 Infinite checkerboard

Joshua Lewinbl mod(x,sin(xy)^2)=y


Lie This one is laggy so beware! \frac{x}{y}=\frac{3}{\sec\left(x^{5^y}\right)}

Lie This is not that detailed but I thought it looked SO COOL! \sqrt{x^2y^2}=\frac{9}{\sec\left(\pi x\right)}

Lie Put this in radian mode it looks cool: y=\frac{\cot\left(x\right)}{\tan\left(y\right)}

Lie scatterplot https://www.desmos.com/calculator/ymyky5vnfe

Orion D. Hunter 
Orion D. Hunter some comments were not loading

Lie (but it has to be in radians degrees is too anticlimactic): x^y=9\sin\left(\cot\left(3x\right)\right)

Filip Sedláček 2^x * 2^y=2^(x+y)

D35M05BR34K4G3MA5T3R How about some crazy art? To see it, go to https://www.desmos.com/calculator/z5o7ikzpwu .

Daemon Morrisoneagan this never ends. no matter how far you zoom, the is an endless pattern. \log\left(\tan\left(\cos\left(\ln x^2\right)\right)\right)=\log\left(\cot\left(\sin\left(\ln y^2\right)\right)\right)
and this one i just can't explain. \log\left(\tan\left(\cos\left(\left(\ln x^2\right)!!\right)\right)\right)=\log\left(\cot\left(\sin\left(\left(\ln y^2\right)!!\right)\right)\right)

Tanksear Industries \sin\left(x\sqrt[xy^{\frac{\sqrt{\sqrt{xy^{x^{\frac{y}{x^y}}}x^{yx}}}}{\sqrt{x\sqrt{x\sqrt{y\sqrt{\sqrt{x}}}}}}}]{\sin\left(\sqrt{x\frac{\sin\left(x\right)}{xy}}\right)}\left\sin\left(\sqrt{x}\right)\right\right)\le\sin\left(\sqrt{\sqrt{x^y}\sqrt{yx^{yxy}}}\right)

Daemon Morrisoneagan How to make Desmos crash

ANDREW TUCKER \tan\left(\frac{\sin\left(x+\tan\left(y\right)\right)}{y!\sin\left(x\right)}\right)=\tan\left(\frac{\tan\left(y+\sin\left(x\right)\right)}{x!\tan\left(y\right)}\right)
\sin\left(x!^{\log\left(y!\right)}\right)=\tan\left(y^{\log\left(x\right)}\right)
y=\tan\left(\frac{\sin\left(\tan\left(\frac{\tan\left(\frac{\sin\left(\frac{\sin\left(\tan\left(x\right)\right)}{\cos\left(\sin\left(y\right)\right)}\right)}{y\tan\left(x\right)}\right)}{\tan\left(\tan\left(\frac{\tan\left(\tan\left(x\right)\right)}{y}\right)\right)}\right)\right)}{\tan\left(\tan\left(\tan\left(\frac{\tan\left(\sin\left(x\right)\right)}{y+\tan\left(x\right)}\right)\right)\right)}\right)
y=\tan\left(\frac{\tan\left(\frac{\sin\left(x+\tan\left(x\right)\right)}{y}\right)}{\sin\left(\tan\left(y\right)\right)}\right)

Carson Perkins y=tan(cos(x^5(y)))

ANDREW TUCKER \tan\left(\frac{\tan\left(\sin\left(x\right)\right)\sin\left(\log\left(y\right)\right)}{\sin\left(x!\cos\left(y\right)\right)!}\right)=\cos\left(\sqrt{\sin\left(\frac{\tan\left(x+\sin\left(y!\right)\right)}{x\cos\left(y\tan\left(\sin\left(x!\right)\right)\right)}\right)!}\right)
This one is a mess
https://www.desmos.com/calculator/hzyizn3wep

Composer Machine \tan\left(2\cdot\cos\left(x\right)\right)=\frac{\sin\left(y^2x^2\right)}{\log\left(2\right)}
this makes an interesting design although it seems to form into a 'straighter line' as you zoom out on the left and right sides! 
Yang Pan I was just bored
lol
https://www.desmos.com/calculator/uev2f3dwmwThis one does the opposite of what others do. The more you zoom out, the more it becomes focused. Until, it just stops loading.
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