Find the first four nonzero terms in a power series expansion of the solution to the given initial value problem. 3 y double prime minus 3 e superscript 3 x baseline y prime plus 6 (cosine x )yequals0; y (0 )equalsnegative 1, y prime (0 )equals1

Ascientist has 50 grams of a radioactive element. the amount of radioactive element remaining after t days can be determined using the equation (1) after two days the scientist receives a second shipment of 50 grams of the same element. the equation used to represent the amount of shipment 2 remaining after t days is 10) - 50 which of the following is an equivalent form of the expression for the amount remaining in shipment 2? what’s the answer?