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Tölvunarfræði 1

Tölvunarfræði 1. Vikublað 9. Verkefni 3.1 a). b = 1 - 2*a+a^2*(a-2). Verkefni 3.1 b). y = sqrt(2-sind(25)^2). Verkefni 3.1 c). a/ ((2.45e-6)+(1/6000)*(b/(x+1))^3). Verkefni 3.1 d). Meðalhraði = vegalengd / tími medalhradi = vegalengd / timi. Verkefni 3.1 e).

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Tölvunarfræði 1

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  1. Tölvunarfræði 1 Vikublað 9

  2. Verkefni 3.1 a) b = 1 - 2*a+a^2*(a-2)

  3. Verkefni 3.1 b) y = sqrt(2-sind(25)^2)

  4. Verkefni 3.1 c) a/ ((2.45e-6)+(1/6000)*(b/(x+1))^3)

  5. Verkefni 3.1 d) Meðalhraði = vegalengd / tími medalhradi = vegalengd / timi

  6. Verkefni 3.1 e) x < 2 && (b ~=3 || (1 <=a && a <= 3))

  7. Verkefni 3.1 f) q = ~(p || (p && (a == 2)))

  8. %Lausn við dæmi 3.3. function AnnarsStigsJafna() disp('---------------------------------------------------------------------') disp('Með þessu forriti má finna lausnir á annars stigs jöfnunni ax^2+bx+c.') disp('---------------------------------------------------------------------') a=input('Sláðu inn a: '); b=input('Sláðu inn b: '); c=input('Sláðu inn c: '); d=b^2-4*a*c; x1=(-b+sqrt(d))/(2*a); x2=(-b-sqrt(d))/(2*a); disp(' ') if d<0 disp('Annars stigs jafnan hefur enga lausn.') elseif d==0 disp(['Annars stigs jafnan hefur eina lausn og hún er: x= ' num2str(x1)]) else disp('Annars stigs jafnan hefur tvær lausnir og þær eru:') disp(['x= ' num2str(x1) ' og x= ' num2str(x2)]) end

  9. Verkefni 4.1 function y = sveifluTimi() %Verkefni 4.1. disp('############################################# ') disp('## Útrikningur á sveiflutíma í gormakerfi ## ') disp('############################################# ') m=input('Sláðu inn gildi massans á hlutnum í kg: '); while m<0 disp(' Ólögleg þyng sleginn inn ') m=input('Sláðu inn gildi massans á hlutnum í kg: '); end k1=input('Sláðu inn gildi gormstuðuls á gormi 1: '); k2=input('Sláðu inn gildi gormstuðuls á gormi 2: '); T=2*pi*sqrt(m/(k1+k2)); disp(' ') disp(['Eiginsveiflutími kerfisins er: T = ' num2str(T) 's'])

  10. Í næstu viku • Matlab • 3.4 • Vigrar og fylki • Fylkjareikningur ofl • 4.3 • Taylor nálgun sin(x) • Gamalt heimadæmi(ekki skiladæmi) • 5.2 • Rafmagnsfræði • Hliðtengt / Raðtengt

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