Product Rule. If the two functions f(x) and g(x) are differentiable (i.e. the derivative exist) then the product is differentiable and, The proof of the Product Rule is shown in the Proof of Various Derivative Formulas section of the Extras chapter.
Inflammation is the most common reason for muscle pain and aches. Any time that major inflammation exists (strep throat, hepatitis, cancer, lupus, acute heart attack, etc.), signs and symptoms often include fevers, sweats, chills, fatigue, weight loss, and various muscle aches, pains and weakness.
common symptoms of lupus are unexplained fever extreme fatigue painful or swollen joints red rash or color change on the face chest pain upon deep breathing unusual hair loss pale or purple fingers or toes from cold or stress raynaud s phenomenonsensitivity to the sunswelling edema in legs or around eyes etcommon symptoms of lupus are unexplained fever extreme fatigue painful or swollen joints red rash or color change on the face chest pain upon deep breathing unusual hair loss pale or purple fingers or toes from cold or stress raynaud s phenomenon sensitivity to the sun swelling edema in legs or around eyes etc