############################################################################## # FÍSICA COMPUTACIONAL II # # por # # Francisco Carlos Lavarda # ############################################################################## LISTA DE EXERCÍCIOS DE DERIVADAS PARCIAIS E TOTAIS Para cada uma das funções abaixo, calcule todas as derivadas parciais solicitadas e a derivada total: [1] f(x,y)=4(x**2)(y**3) ordens: x:1, y:3: resp = 48*x total: 12*x^2*y^2*del(y)+8*x*y^3*del(x) [2] f(x,y,z)=4(x**2)(y**3)sen(xyz) ordens: x:1, y:2, z=3; resp = -4*x^7*y^7*z^3*sin(x*y*z)+408*x^5*y^5*z*sin(x*y*z)+76*x^6*y^6*z^2*cos(x*y*z)-600*x^4*y^4*cos(x*y*z) total: 4*x^3*y^4*cos(x*y*z)*del(z)+(12*x^2*y^2*sin(x*y*z)+4*x^3*y^3*z*cos(x*y*z))*del(y)+(8*x*y^3*sin(x*y*z)+4*x^2*y^4*z*cos(x*y*z))*del(x) [3] f(t,y,u)=t^5+((t+1)/t^2)*sen(2y)*cos(u) ordens: t:2, y:2, u:2 : resp = (24*(t+1)*cos(u)*sin(2*y))/t^4-(16*cos(u)*sin(2*y))/t^3 total: (2*(t+1)*cos(u)*cos(2*y)*del(y))/t^2-((t+1)*sin(u)*sin(2*y)*del(u))/t^2+(-(2*(t+1)*cos(u)*sin(2*y))/t^3+(cos(u)*sin(2*y))/t^2+5*t^4)*del(t) [4] g(a,b,c)=ln(a)*sen(b)*c**4 ordens: a:1, b:2, c:3: resp = -(24*sin(b)*c)/a total: 4*log(a)*sin(b)*c^3*del(c)+log(a)*cos(b)*c^4*del(b)+(sin(b)*c^4*del(a))/a [5] h(d,f,g)=e^(3*d^2+f+2g) ordens: d:1, f:2, g:1: resp = 12*d*%e^(2*g+f+3*d^2) total: 2*%e^(2*g+f+3*d^2)*del(g)+%e^(2*g+f+3*d^2)*del(f)+6*d*%e^(2*g+f+3*d^2)*del(d)