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Part $1$:

$[10]$

Consider the signal $x(t)$ shown in Fig. $1.$

Remark: the lowest amplitude value is $-\frac{1}{2},$ i$.$e$.x(t)=-\frac{1}{2}$ for $x(t)x(t)f(t)=x(2t-5)g(t)=x(2-4t)3.$

Express the signal $x(t)in$ terms $of$ unit step functions.

Use the given MATLAB function above $to$ sketch the signal $x(t).$

Sketch the signal $f(t)=x(2t-5).$

Sketch the signal $g(t)=x(2-4t).$

$(2)$

$(3)$

$(3)$