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The Maxima on-line user's manual

Algebra Calculator

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Abs

Function: abs (<expr>) Returns the absolute value <expr>. If <expr> is complex, returns the complex modulus of <expr>.

I(i):=-i/(s*R*C);
eq1: Vhp=Vin+Vlp-d*(tilt*Vbp1-0.5*Vbp2+(1/tilt)*Vbp3);
eq2: Vbp1=I(Vhp);
eq3: Vbp2=I(Vbp1);
eq4: Vbp3=I(Vbp2);
eq5: Vlp=I(Vbp3);
eq6: linsolve([eq1,eq2,eq3,eq4,eq5],[Vhp,Vbp1,Vbp2,Vbp3,Vlp]);
eq7: (eq6),s=%i*2*%pi*f,R=100000,C=100e-12,d=1,Vin=1.0,tilt=0.667;
db(v):=20*log(abs(v))/log(10);
plot2d([db(rhs(eq7[1])),db(rhs(eq7[2])),db(rhs(eq7[3])),db(rhs(eq7[4])),db(rhs(eq7[5]))],[f,8000,80000],[logx]);

There are also some inexact matches for abs. Try ?? abs to see them.

(%o1)                                true
(%i2) 

Related Examples

abs-plot2d-simpsum-sin-sum
plot2d([b1(x),b2(x),b3(x),b4(x),b5(x),b6(x)],[x,0,%pi/2],[y,0,1], [color,blue, green,syan,red,black,turquoise], [legend,"T0","T2","T4","T6","T8","T10"],[xlabel,"Radianes"],[ylabel,"Error relativo"]);

m(x):=sum((((2*n)!/(2...

m1(x):=sum((((2*n)!/(...

m2(x):=sum((((2*n)!/(...

Calculate

abs-define

define(h(x), abs(2*x^...

define(f(x), abs((x^2...

Calculate

abs-jacobian

jacobian (-abs([x^2, ...

Calculate

abs-cos-define-ev-integrate-numer-pi-sin-sum

f(x):=x;

a(n):=(1/%pi)*integra...

b(n):=(1/%pi)*integra...

Calculate

abs-imagpart-realpart

(%i-1)^(1/2);

abs((%i-1)^(1/2));

realpart((%i-1)^(1/2));

Calculate

abs-define-plot2d-realroots
plot2d(f(x), [x, -10,10]);

define(f(x), abs(2*x^...

plot2d(f(x), [x, -10,...

realroots(f(x)=5);

Calculate

abs-array-do-if-listarray-plot2d-sin
plot2d([f,[discrete,pointx,pointy],[discrete,rx,ry]],[x,0,6.28],[style,lines,points,points],[point_type,bullet,times],[legend,"sin(x)","",""]);

m:4;

array([rs,rsy],float,m);

i:0;

Calculate

abs-cos-plot2d-sin
plot2d([P(x),f(x),roots],[x,0,2*%pi],[style,lines,lines,points]);

roots:[discrete,[[0.2...

P(x):=-0.390602559776...

f(x):=cos(3*x)+sin(x)...

Calculate