Problem 121. surface of a spherical planet

Solution 18514

Submitted on 31 Jan 2012 by Tomasz

This solution is locked. To view this solution, you need to provide a solution of the same size or smaller.

Aurelien Queffurust on 13 Feb 2012

I need to remember that using 0.31830988618379067154 is less expensive (size 14) than using 1/pi (size 15) ;)

Yvan Lengwiler on 1 Mar 2012

Yeah. But this is useful only within Cody. For real work it would be crazy to program it this way.

William Smith on 25 Sep 2012

Only if you are writing for a low solution size. There's on penalty for writing for clarity, and it's preferred in the real world...

Test	Status	Code Input and Output
1	Pass	%% x = 1; y_correct = 1/pi; assert(isequal(your_fcn_name(x),y_correct)) y = 0.3183
2	Pass	%% x = pi; y_correct = pi; assert(isequal(your_fcn_name(x),y_correct)) y = 3.1416
3	Pass	%% x = pi/2; y_correct = pi/4; assert(isequal(your_fcn_name(x),y_correct)) y = 0.7854

Test

Status

Code Input and Output

Pass

%% x = 1; y_correct = 1/pi; assert(isequal(your_fcn_name(x),y_correct))

y = 0.3183

Pass

%% x = pi; y_correct = pi; assert(isequal(your_fcn_name(x),y_correct))

y = 3.1416

Pass

%% x = pi/2; y_correct = pi/4; assert(isequal(your_fcn_name(x),y_correct))

y = 0.7854