Basic operators in matlab

Basic operators in matlab

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  Basic Operators inMatlab Rishi PL Department of Electronic and Communication Engineering, Shyamsundar PL Department of Control System Engineering
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  Operators in Matlab ●There are basic three operators in Matlab they are ● Arithmetic Operator ● Relational Operator ● Logical Operator
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  Arithmetic Operator Operator Symbol UnaryAddition + Binary Addition + Unary Subtraction - Binary Subtraction - Matrix Multiplication * Element Wise-Multiplication .* Matrix division / Element Wise- Division ./
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  Arithmetic Operator MatlabCode 4+2= +6 Matlab code: Matlab code: Matlab code: >>4+2 >>4-2 >>4*2 >>6 >>2 >>8 Binary Operator Unary Operator
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  Creating the Matrix& Multiplication In MATLAB, you create a matrix by entering elements in each row as comma or space delimited numbers and using semicolons to mark the end of each row. Matlab code for Matrix Creation a = [ 1 1 1; 2 2 2;] Matlab code for multiplication a = 1 1 1 a = [ 1 1 1; 2 2 2;] ; 2 2 2 b= [ 1 1 1; 2 2 2;] ; c=a*b; disp(c);
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  Element wise Multiplication ●For element-wise multiplication dot(.) operator is used to perform operation. >> a=5; >>b=6; >>c=a.*b; >>disp(c);
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  Relational Operator Operator Symbol Equalto == Not equal to ~= Greater than > Greater than equal >= Less than < Less than equal <=
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  Relational Operator ● Relationaloperator is used to perform relation of two numerical numbers that perform some assignment operations. Creating Unit Impulse signal using relational operator >>t=-5:1:5; >>impulse=t==0; >>plot(t,impulse);
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  Logical Operator Operator Symbol AND& OR | NOT ~ Short circuited AND && Short circuited OR ||
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  Logical Operator ● Logicaloperator do operation same like AND, OR, NOT gate operations. Short circuited AND >>a=5; >>b=5; >>c=(a==5)&&(b~=5) >>False Short circuited OR >>a=5; >>b=5; >>c=(a==5)||(b~=5) >>True In short circuit AND produces 0*1 = FALSE, 1*1 = TRUE (same like AND operation) In short circuit OR produces 0+1= TRUE also 1+1 = TRUE (same like OR operation)
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  Basic program ofmultiplication of two signals ● Multiplication of decaying exponential and sine-signal using matlabclear all; close all; t=0:0.01:100; a=exp(-2*t); b=cos(2*3.14*1*t); c=a.*b; subplot(3,1,1) plot(t,a); title('decaying exponential'); xlabel('time'); ylabel('amplitude'); subplot(3,1,2) plot(t,b); title('sine singnal'); xlabel('time'); ylabel('amplitude'); subplot(3,1,3) plot(t,c); title('Multiplication of two signal'); xlabel('time'); ylabel('amplitude');
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  Multiplication of decayingexponential and sine-signal
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