Expression * GetDerivativeVisitor::visit(Fcn::Cosh * expression) {
ExpressionList * parameters = expression->getParameterList();
if (parameters->getLength() != 1) {
throw InvalidFunctionParametersException();
}
Expression * parameterExpr = parameters->getExpressionAt(0);
std::unique_ptr<Expression> derivedParameterExprPtr((Expression *)parameterExpr->accept(this));
return new Op::Multiplication(
new Fcn::Sinh(parameterExpr->copy()),
derivedParameterExprPtr.release()
);
}
Expression * GetDerivativeVisitor::visit(Fcn::ArTanh * expression) {
ExpressionList * parameters = expression->getParameterList();
if (parameters->getLength() != 1) {
throw InvalidFunctionParametersException();
}
Expression * parameterExpr = parameters->getExpressionAt(0);
std::unique_ptr<Expression> derivedParameterExprPtr((Expression *)parameterExpr->accept(this));
return new Op::Division(
derivedParameterExprPtr.release(),
new Op::Subtraction(
new Number(1.0),
new Op::Power(parameterExpr->copy(), new Number(2.0))
)
);
}
