break end case continue do else elseif for goto if return struct switch while function otherwise try catch global persistent double abs acos acot acsc angle asec asin atan bar ceil close cond condeig complex conj cos cot csc det disp display exp figure filter fix fft floor fprintf freqz get gcd grid imag impz isempty isequal islogical isnumeric isprime isreal issparse lcm length linspace load log log2 log10 logspace mesh mod ndims nextpow2 norm normest null numel open orth perms primes poly pow2 plot rank rcond real reallog realpow realsqrt rem roots rref save scatter sec semilogx semilogy set sin sign size sprintf sqrt stairs stem subplot subspace tan title trace waitforbuttonpress zoom zplane